21575684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{4999}}^1$

素因数の和:5099

約数の個数: 24

約数和(自身を含む): 41160000

約数和(自身を除く): 19584316

約数列:

[1, 2, 4, 13, 26, 52, 83, 166, 332, 1079, 2158, 4316, 4999, 9998, 19996, 64987, 129974, 259948, 414917, 829834, 1659668, 5393921, 10787842, 21575684]

約数ペア:

[(1, 21575684), (2, 10787842), (4, 5393921), (13, 1659668), (26, 829834), (52, 414917), (83, 259948), (166, 129974), (332, 64987), (1079, 19996), (2158, 9998), (4316, 4999)]