20915618

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{491}}^1$

素因数の和:590

約数の個数: 24

約数和(自身を含む): 33741360

約数和(自身を除く): 12825742

約数列:

[1, 2, 19, 38, 59, 118, 361, 491, 722, 982, 1121, 2242, 9329, 18658, 21299, 28969, 42598, 57938, 177251, 354502, 550411, 1100822, 10457809, 20915618]

約数ペア:

[(1, 20915618), (2, 10457809), (19, 1100822), (38, 550411), (59, 354502), (118, 177251), (361, 57938), (491, 42598), (722, 28969), (982, 21299), (1121, 18658), (2242, 9329)]