64172840

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{21977}}^1$

素因数の和:22061

約数の個数: 32

約数和(自身を含む): 146373480

約数和(自身を除く): 82200640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 21977, 43954, 87908, 109885, 175816, 219770, 439540, 879080, 1604321, 3208642, 6417284, 8021605, 12834568, 16043210, 32086420, 64172840]

約数ペア:

[(1, 64172840), (2, 32086420), (4, 16043210), (5, 12834568), (8, 8021605), (10, 6417284), (20, 3208642), (40, 1604321), (73, 879080), (146, 439540), (292, 219770), (365, 175816), (584, 109885), (730, 87908), (1460, 43954), (2920, 21977)]