534640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:217

約数の個数: 40

約数和(自身を含む): 1281168

約数和(自身を除く): 746528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 163, 164, 205, 326, 328, 410, 652, 656, 815, 820, 1304, 1630, 1640, 2608, 3260, 3280, 6520, 6683, 13040, 13366, 26732, 33415, 53464, 66830, 106928, 133660, 267320, 534640]

約数ペア:

[(1, 534640), (2, 267320), (4, 133660), (5, 106928), (8, 66830), (10, 53464), (16, 33415), (20, 26732), (40, 13366), (41, 13040), (80, 6683), (82, 6520), (163, 3280), (164, 3260), (205, 2608), (326, 1640), (328, 1630), (410, 1304), (652, 820), (656, 815)]