21689640

素因数分解:

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

素因数の和:197

約数の個数: 256

約数和(自身を含む): 87552000

約数和(自身を除く): 65862360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 27, 28, 30, 35, 36, 38, 40, 42, 45, 54, 56, 57, 60, 63, 70, 72, 76, 84, 90, 95, 105, 108, 114, 120, 126, 133, 135, 140, 151, 152, 168, 171, 180, 189, 190, 210, 216, 228, 252, 266, 270, 280, 285, 302, 315, 342, 360, 378, 380, 399, 420, 453, 456, 504, 513, 532, 540, 570, 604, 630, 665, 684, 755, 756, 760, 798, 840, 855, 906, 945, 1026, 1057, 1064, 1080, 1140, 1197, 1208, 1260, 1330, 1359, 1368, 1510, 1512, 1596, 1710, 1812, 1890, 1995, 2052, 2114, 2265, 2280, 2394, 2520, 2565, 2660, 2718, 2869, 3020, 3171, 3192, 3420, 3591, 3624, 3780, 3990, 4077, 4104, 4228, 4530, 4788, 5130, 5285, 5320, 5436, 5738, 5985, 6040, 6342, 6795, 6840, 7182, 7560, 7980, 8154, 8456, 8607, 9060, 9513, 9576, 10260, 10570, 10872, 11476, 11970, 12684, 13590, 14345, 14364, 15855, 15960, 16308, 17214, 17955, 18120, 19026, 20083, 20385, 20520, 21140, 22952, 23940, 25368, 25821, 27180, 28539, 28690, 28728, 31710, 32616, 34428, 35910, 38052, 40166, 40770, 42280, 43035, 47565, 47880, 51642, 54360, 57078, 57380, 60249, 63420, 68856, 71820, 76104, 77463, 80332, 81540, 86070, 95130, 100415, 103284, 114156, 114760, 120498, 126840, 129105, 142695, 143640, 154926, 160664, 163080, 172140, 180747, 190260, 200830, 206568, 228312, 240996, 258210, 285390, 301245, 309852, 344280, 361494, 380520, 387315, 401660, 481992, 516420, 542241, 570780, 602490, 619704, 722988, 774630, 803320, 903735, 1032840, 1084482, 1141560, 1204980, 1445976, 1549260, 1807470, 2168964, 2409960, 2711205, 3098520, 3614940, 4337928, 5422410, 7229880, 10844820, 21689640]

約数ペア:

[(1, 21689640), (2, 10844820), (3, 7229880), (4, 5422410), (5, 4337928), (6, 3614940), (7, 3098520), (8, 2711205), (9, 2409960), (10, 2168964), (12, 1807470), (14, 1549260), (15, 1445976), (18, 1204980), (19, 1141560), (20, 1084482), (21, 1032840), (24, 903735), (27, 803320), (28, 774630), (30, 722988), (35, 619704), (36, 602490), (38, 570780), (40, 542241), (42, 516420), (45, 481992), (54, 401660), (56, 387315), (57, 380520), (60, 361494), (63, 344280), (70, 309852), (72, 301245), (76, 285390), (84, 258210), (90, 240996), (95, 228312), (105, 206568), (108, 200830), (114, 190260), (120, 180747), (126, 172140), (133, 163080), (135, 160664), (140, 154926), (151, 143640), (152, 142695), (168, 129105), (171, 126840), (180, 120498), (189, 114760), (190, 114156), (210, 103284), (216, 100415), (228, 95130), (252, 86070), (266, 81540), (270, 80332), (280, 77463), (285, 76104), (302, 71820), (315, 68856), (342, 63420), (360, 60249), (378, 57380), (380, 57078), (399, 54360), (420, 51642), (453, 47880), (456, 47565), (504, 43035), (513, 42280), (532, 40770), (540, 40166), (570, 38052), (604, 35910), (630, 34428), (665, 32616), (684, 31710), (755, 28728), (756, 28690), (760, 28539), (798, 27180), (840, 25821), (855, 25368), (906, 23940), (945, 22952), (1026, 21140), (1057, 20520), (1064, 20385), (1080, 20083), (1140, 19026), (1197, 18120), (1208, 17955), (1260, 17214), (1330, 16308), (1359, 15960), (1368, 15855), (1510, 14364), (1512, 14345), (1596, 13590), (1710, 12684), (1812, 11970), (1890, 11476), (1995, 10872), (2052, 10570), (2114, 10260), (2265, 9576), (2280, 9513), (2394, 9060), (2520, 8607), (2565, 8456), (2660, 8154), (2718, 7980), (2869, 7560), (3020, 7182), (3171, 6840), (3192, 6795), (3420, 6342), (3591, 6040), (3624, 5985), (3780, 5738), (3990, 5436), (4077, 5320), (4104, 5285), (4228, 5130), (4530, 4788)]