21220338

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 43528320

約数和(自身を除く): 22307982

約数列:

[1, 2, 3, 6, 71, 109, 142, 213, 218, 327, 426, 457, 654, 914, 1371, 2742, 7739, 15478, 23217, 32447, 46434, 49813, 64894, 97341, 99626, 149439, 194682, 298878, 3536723, 7073446, 10610169, 21220338]

約数ペア:

[(1, 21220338), (2, 10610169), (3, 7073446), (6, 3536723), (71, 298878), (109, 194682), (142, 149439), (213, 99626), (218, 97341), (327, 64894), (426, 49813), (457, 46434), (654, 32447), (914, 23217), (1371, 15478), (2742, 7739)]