420021844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{156491}}^1$

素因数の和:156567

約数の個数: 24

約数和(自身を含む): 815010336

約数和(自身を除く): 394988492

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 156491, 312982, 625964, 1721401, 3442802, 6885604, 9545951, 19091902, 38183804, 105005461, 210010922, 420021844]

約数ペア:

[(1, 420021844), (2, 210010922), (4, 105005461), (11, 38183804), (22, 19091902), (44, 9545951), (61, 6885604), (122, 3442802), (244, 1721401), (671, 625964), (1342, 312982), (2684, 156491)]