2788880

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:575

約数の個数: 40

約数和(自身を含む): 6588864

約数和(自身を除く): 3799984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 491, 568, 710, 982, 1136, 1420, 1964, 2455, 2840, 3928, 4910, 5680, 7856, 9820, 19640, 34861, 39280, 69722, 139444, 174305, 278888, 348610, 557776, 697220, 1394440, 2788880]

約数ペア:

[(1, 2788880), (2, 1394440), (4, 697220), (5, 557776), (8, 348610), (10, 278888), (16, 174305), (20, 139444), (40, 69722), (71, 39280), (80, 34861), (142, 19640), (284, 9820), (355, 7856), (491, 5680), (568, 4910), (710, 3928), (982, 2840), (1136, 2455), (1420, 1964)]