396455480

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139597}}^1$

素因数の和:139679

約数の個数: 32

約数和(自身を含む): 904595040

約数和(自身を除く): 508139560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 139597, 279194, 558388, 697985, 1116776, 1395970, 2791940, 5583880, 9911387, 19822774, 39645548, 49556935, 79291096, 99113870, 198227740, 396455480]

約数ペア:

[(1, 396455480), (2, 198227740), (4, 99113870), (5, 79291096), (8, 49556935), (10, 39645548), (20, 19822774), (40, 9911387), (71, 5583880), (142, 2791940), (284, 1395970), (355, 1116776), (568, 697985), (710, 558388), (1420, 279194), (2840, 139597)]