320907720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20107}}^1$

素因数の和:20147

約数の個数: 128

約数和(自身を含む): 1158220800

約数和(自身を除く): 837313080

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, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1330, 1596, 1995, 2280, 2660, 3192, 3990, 5320, 7980, 15960, 20107, 40214, 60321, 80428, 100535, 120642, 140749, 160856, 201070, 241284, 281498, 301605, 382033, 402140, 422247, 482568, 562996, 603210, 703745, 764066, 804280, 844494, 1125992, 1146099, 1206420, 1407490, 1528132, 1688988, 1910165, 2111235, 2292198, 2412840, 2674231, 2814980, 3056264, 3377976, 3820330, 4222470, 4584396, 5348462, 5629960, 5730495, 7640660, 8022693, 8444940, 9168792, 10696924, 11460990, 13371155, 15281320, 16045386, 16889880, 21393848, 22921980, 26742310, 32090772, 40113465, 45843960, 53484620, 64181544, 80226930, 106969240, 160453860, 320907720]

約数ペア:

[(1, 320907720), (2, 160453860), (3, 106969240), (4, 80226930), (5, 64181544), (6, 53484620), (7, 45843960), (8, 40113465), (10, 32090772), (12, 26742310), (14, 22921980), (15, 21393848), (19, 16889880), (20, 16045386), (21, 15281320), (24, 13371155), (28, 11460990), (30, 10696924), (35, 9168792), (38, 8444940), (40, 8022693), (42, 7640660), (56, 5730495), (57, 5629960), (60, 5348462), (70, 4584396), (76, 4222470), (84, 3820330), (95, 3377976), (105, 3056264), (114, 2814980), (120, 2674231), (133, 2412840), (140, 2292198), (152, 2111235), (168, 1910165), (190, 1688988), (210, 1528132), (228, 1407490), (266, 1206420), (280, 1146099), (285, 1125992), (380, 844494), (399, 804280), (420, 764066), (456, 703745), (532, 603210), (570, 562996), (665, 482568), (760, 422247), (798, 402140), (840, 382033), (1064, 301605), (1140, 281498), (1330, 241284), (1596, 201070), (1995, 160856), (2280, 140749), (2660, 120642), (3192, 100535), (3990, 80428), (5320, 60321), (7980, 40214), (15960, 20107)]