21349756

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{5147}}^1$

素因数の和:5229

約数の個数: 24

約数和(自身を含む): 40216176

約数和(自身を除く): 18866420

約数列:

[1, 2, 4, 17, 34, 61, 68, 122, 244, 1037, 2074, 4148, 5147, 10294, 20588, 87499, 174998, 313967, 349996, 627934, 1255868, 5337439, 10674878, 21349756]

約数ペア:

[(1, 21349756), (2, 10674878), (4, 5337439), (17, 1255868), (34, 627934), (61, 349996), (68, 313967), (122, 174998), (244, 87499), (1037, 20588), (2074, 10294), (4148, 5147)]