402620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 867888

約数和(自身を除く): 465268

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 491, 820, 982, 1964, 2455, 4910, 9820, 20131, 40262, 80524, 100655, 201310, 402620]

約数ペア:

[(1, 402620), (2, 201310), (4, 100655), (5, 80524), (10, 40262), (20, 20131), (41, 9820), (82, 4910), (164, 2455), (205, 1964), (410, 982), (491, 820)]