21670456

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{179}}^1\times {\mathrm{409}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 42066000

約数和(自身を除く): 20395544

約数列:

[1, 2, 4, 8, 37, 74, 148, 179, 296, 358, 409, 716, 818, 1432, 1636, 3272, 6623, 13246, 15133, 26492, 30266, 52984, 60532, 73211, 121064, 146422, 292844, 585688, 2708807, 5417614, 10835228, 21670456]

約数ペア:

[(1, 21670456), (2, 10835228), (4, 5417614), (8, 2708807), (37, 585688), (74, 292844), (148, 146422), (179, 121064), (296, 73211), (358, 60532), (409, 52984), (716, 30266), (818, 26492), (1432, 15133), (1636, 13246), (3272, 6623)]