18465720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:142

約数の個数: 256

約数和(自身を含む): 72576000

約数和(自身を除く): 54110280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 19, 20, 21, 24, 26, 28, 30, 35, 38, 39, 40, 42, 52, 56, 57, 60, 65, 70, 76, 78, 84, 89, 91, 95, 104, 105, 114, 120, 130, 133, 140, 152, 156, 168, 178, 182, 190, 195, 210, 228, 247, 260, 266, 267, 273, 280, 285, 312, 356, 364, 380, 390, 399, 420, 445, 455, 456, 494, 520, 532, 534, 546, 570, 623, 665, 712, 728, 741, 760, 780, 798, 840, 890, 910, 988, 1064, 1068, 1092, 1140, 1157, 1235, 1246, 1330, 1335, 1365, 1482, 1560, 1596, 1691, 1729, 1780, 1820, 1869, 1976, 1995, 2136, 2184, 2280, 2314, 2470, 2492, 2660, 2670, 2730, 2964, 3115, 3192, 3382, 3458, 3471, 3560, 3640, 3705, 3738, 3990, 4628, 4940, 4984, 5073, 5187, 5320, 5340, 5460, 5785, 5928, 6230, 6764, 6916, 6942, 7410, 7476, 7980, 8099, 8455, 8645, 9256, 9345, 9880, 10146, 10374, 10680, 10920, 11570, 11837, 12460, 13528, 13832, 13884, 14820, 14952, 15960, 16198, 16910, 17290, 17355, 18690, 20292, 20748, 21983, 23140, 23674, 24297, 24920, 25365, 25935, 27768, 29640, 32396, 33820, 34580, 34710, 35511, 37380, 40495, 40584, 41496, 43966, 46280, 47348, 48594, 50730, 51870, 59185, 64792, 65949, 67640, 69160, 69420, 71022, 74760, 80990, 87932, 94696, 97188, 101460, 103740, 109915, 118370, 121485, 131898, 138840, 142044, 153881, 161980, 175864, 177555, 194376, 202920, 207480, 219830, 236740, 242970, 263796, 284088, 307762, 323960, 329745, 355110, 439660, 461643, 473480, 485940, 527592, 615524, 659490, 710220, 769405, 879320, 923286, 971880, 1231048, 1318980, 1420440, 1538810, 1846572, 2308215, 2637960, 3077620, 3693144, 4616430, 6155240, 9232860, 18465720]

約数ペア:

[(1, 18465720), (2, 9232860), (3, 6155240), (4, 4616430), (5, 3693144), (6, 3077620), (7, 2637960), (8, 2308215), (10, 1846572), (12, 1538810), (13, 1420440), (14, 1318980), (15, 1231048), (19, 971880), (20, 923286), (21, 879320), (24, 769405), (26, 710220), (28, 659490), (30, 615524), (35, 527592), (38, 485940), (39, 473480), (40, 461643), (42, 439660), (52, 355110), (56, 329745), (57, 323960), (60, 307762), (65, 284088), (70, 263796), (76, 242970), (78, 236740), (84, 219830), (89, 207480), (91, 202920), (95, 194376), (104, 177555), (105, 175864), (114, 161980), (120, 153881), (130, 142044), (133, 138840), (140, 131898), (152, 121485), (156, 118370), (168, 109915), (178, 103740), (182, 101460), (190, 97188), (195, 94696), (210, 87932), (228, 80990), (247, 74760), (260, 71022), (266, 69420), (267, 69160), (273, 67640), (280, 65949), (285, 64792), (312, 59185), (356, 51870), (364, 50730), (380, 48594), (390, 47348), (399, 46280), (420, 43966), (445, 41496), (455, 40584), (456, 40495), (494, 37380), (520, 35511), (532, 34710), (534, 34580), (546, 33820), (570, 32396), (623, 29640), (665, 27768), (712, 25935), (728, 25365), (741, 24920), (760, 24297), (780, 23674), (798, 23140), (840, 21983), (890, 20748), (910, 20292), (988, 18690), (1064, 17355), (1068, 17290), (1092, 16910), (1140, 16198), (1157, 15960), (1235, 14952), (1246, 14820), (1330, 13884), (1335, 13832), (1365, 13528), (1482, 12460), (1560, 11837), (1596, 11570), (1691, 10920), (1729, 10680), (1780, 10374), (1820, 10146), (1869, 9880), (1976, 9345), (1995, 9256), (2136, 8645), (2184, 8455), (2280, 8099), (2314, 7980), (2470, 7476), (2492, 7410), (2660, 6942), (2670, 6916), (2730, 6764), (2964, 6230), (3115, 5928), (3192, 5785), (3382, 5460), (3458, 5340), (3471, 5320), (3560, 5187), (3640, 5073), (3705, 4984), (3738, 4940), (3990, 4628)]