1681280

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:127

約数の個数: 64

約数和(自身を含む): 4186080

約数和(自身を除く): 2504800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 71, 74, 80, 128, 142, 148, 160, 185, 284, 296, 320, 355, 370, 568, 592, 640, 710, 740, 1136, 1184, 1420, 1480, 2272, 2368, 2627, 2840, 2960, 4544, 4736, 5254, 5680, 5920, 9088, 10508, 11360, 11840, 13135, 21016, 22720, 23680, 26270, 42032, 45440, 52540, 84064, 105080, 168128, 210160, 336256, 420320, 840640, 1681280]

約数ペア:

[(1, 1681280), (2, 840640), (4, 420320), (5, 336256), (8, 210160), (10, 168128), (16, 105080), (20, 84064), (32, 52540), (37, 45440), (40, 42032), (64, 26270), (71, 23680), (74, 22720), (80, 21016), (128, 13135), (142, 11840), (148, 11360), (160, 10508), (185, 9088), (284, 5920), (296, 5680), (320, 5254), (355, 4736), (370, 4544), (568, 2960), (592, 2840), (640, 2627), (710, 2368), (740, 2272), (1136, 1480), (1184, 1420)]