257865720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{151}}^1$

素因数の和:298

約数の個数: 256

約数和(自身を含む): 945561600

約数和(自身を除く): 687695880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 107, 114, 120, 133, 140, 151, 152, 168, 190, 210, 214, 228, 266, 280, 285, 302, 321, 380, 399, 420, 428, 453, 456, 532, 535, 570, 604, 642, 665, 749, 755, 760, 798, 840, 856, 906, 1057, 1064, 1070, 1140, 1208, 1284, 1330, 1498, 1510, 1596, 1605, 1812, 1995, 2033, 2114, 2140, 2247, 2265, 2280, 2568, 2660, 2869, 2996, 3020, 3171, 3192, 3210, 3624, 3745, 3990, 4066, 4228, 4280, 4494, 4530, 5285, 5320, 5738, 5992, 6040, 6099, 6342, 6420, 7490, 7980, 8132, 8456, 8607, 8988, 9060, 10165, 10570, 11235, 11476, 12198, 12684, 12840, 14231, 14345, 14980, 15855, 15960, 16157, 16264, 17214, 17976, 18120, 20083, 20330, 21140, 22470, 22952, 24396, 25368, 28462, 28690, 29960, 30495, 31710, 32314, 34428, 40166, 40660, 42280, 42693, 43035, 44940, 48471, 48792, 56924, 57380, 60249, 60990, 63420, 64628, 68856, 71155, 80332, 80785, 81320, 85386, 86070, 89880, 96942, 100415, 113099, 113848, 114760, 120498, 121980, 126840, 129256, 142310, 160664, 161570, 170772, 172140, 193884, 200830, 213465, 226198, 240996, 242355, 243960, 284620, 301245, 306983, 323140, 339297, 341544, 344280, 387768, 401660, 426930, 452396, 481992, 484710, 565495, 569240, 602490, 613966, 646280, 678594, 803320, 853860, 904792, 920949, 969420, 1130990, 1204980, 1227932, 1357188, 1534915, 1696485, 1707720, 1841898, 1938840, 2148881, 2261980, 2409960, 2455864, 2714376, 3069830, 3392970, 3683796, 4297762, 4523960, 4604745, 6139660, 6446643, 6785940, 7367592, 8595524, 9209490, 10744405, 12279320, 12893286, 13571880, 17191048, 18418980, 21488810, 25786572, 32233215, 36837960, 42977620, 51573144, 64466430, 85955240, 128932860, 257865720]

約数ペア:

[(1, 257865720), (2, 128932860), (3, 85955240), (4, 64466430), (5, 51573144), (6, 42977620), (7, 36837960), (8, 32233215), (10, 25786572), (12, 21488810), (14, 18418980), (15, 17191048), (19, 13571880), (20, 12893286), (21, 12279320), (24, 10744405), (28, 9209490), (30, 8595524), (35, 7367592), (38, 6785940), (40, 6446643), (42, 6139660), (56, 4604745), (57, 4523960), (60, 4297762), (70, 3683796), (76, 3392970), (84, 3069830), (95, 2714376), (105, 2455864), (107, 2409960), (114, 2261980), (120, 2148881), (133, 1938840), (140, 1841898), (151, 1707720), (152, 1696485), (168, 1534915), (190, 1357188), (210, 1227932), (214, 1204980), (228, 1130990), (266, 969420), (280, 920949), (285, 904792), (302, 853860), (321, 803320), (380, 678594), (399, 646280), (420, 613966), (428, 602490), (453, 569240), (456, 565495), (532, 484710), (535, 481992), (570, 452396), (604, 426930), (642, 401660), (665, 387768), (749, 344280), (755, 341544), (760, 339297), (798, 323140), (840, 306983), (856, 301245), (906, 284620), (1057, 243960), (1064, 242355), (1070, 240996), (1140, 226198), (1208, 213465), (1284, 200830), (1330, 193884), (1498, 172140), (1510, 170772), (1596, 161570), (1605, 160664), (1812, 142310), (1995, 129256), (2033, 126840), (2114, 121980), (2140, 120498), (2247, 114760), (2265, 113848), (2280, 113099), (2568, 100415), (2660, 96942), (2869, 89880), (2996, 86070), (3020, 85386), (3171, 81320), (3192, 80785), (3210, 80332), (3624, 71155), (3745, 68856), (3990, 64628), (4066, 63420), (4228, 60990), (4280, 60249), (4494, 57380), (4530, 56924), (5285, 48792), (5320, 48471), (5738, 44940), (5992, 43035), (6040, 42693), (6099, 42280), (6342, 40660), (6420, 40166), (7490, 34428), (7980, 32314), (8132, 31710), (8456, 30495), (8607, 29960), (8988, 28690), (9060, 28462), (10165, 25368), (10570, 24396), (11235, 22952), (11476, 22470), (12198, 21140), (12684, 20330), (12840, 20083), (14231, 18120), (14345, 17976), (14980, 17214), (15855, 16264), (15960, 16157)]