20854220

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6397}}^1$

素因数の和:6569

約数の個数: 24

約数和(自身を含む): 44069424

約数和(自身を除く): 23215204

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6397, 12794, 25588, 31985, 63970, 127940, 1042711, 2085422, 4170844, 5213555, 10427110, 20854220]

約数ペア:

[(1, 20854220), (2, 10427110), (4, 5213555), (5, 4170844), (10, 2085422), (20, 1042711), (163, 127940), (326, 63970), (652, 31985), (815, 25588), (1630, 12794), (3260, 6397)]