20556316

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{1201}}^1$

素因数の和:1605

約数の個数: 24

約数和(自身を含む): 39377520

約数和(自身を除く): 18821204

約数列:

[1, 2, 4, 11, 22, 44, 389, 778, 1201, 1556, 2402, 4279, 4804, 8558, 13211, 17116, 26422, 52844, 467189, 934378, 1868756, 5139079, 10278158, 20556316]

約数ペア:

[(1, 20556316), (2, 10278158), (4, 5139079), (11, 1868756), (22, 934378), (44, 467189), (389, 52844), (778, 26422), (1201, 17116), (1556, 13211), (2402, 8558), (4279, 4804)]