19998484

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7451}}^1$

素因数の和:7527

約数の個数: 24

約数和(自身を含む): 38810016

約数和(自身を除く): 18811532

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 7451, 14902, 29804, 81961, 163922, 327844, 454511, 909022, 1818044, 4999621, 9999242, 19998484]

約数ペア:

[(1, 19998484), (2, 9999242), (4, 4999621), (11, 1818044), (22, 909022), (44, 454511), (61, 327844), (122, 163922), (244, 81961), (671, 29804), (1342, 14902), (2684, 7451)]