313540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 671832

約数和(自身を除く): 358292

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 257, 305, 514, 610, 1028, 1220, 1285, 2570, 5140, 15677, 31354, 62708, 78385, 156770, 313540]

約数ペア:

[(1, 313540), (2, 156770), (4, 78385), (5, 62708), (10, 31354), (20, 15677), (61, 5140), (122, 2570), (244, 1285), (257, 1220), (305, 1028), (514, 610)]