21105008

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:429

約数の個数: 40

約数和(自身を含む): 42259200

約数和(自身を除く): 21154192

約数列:

[1, 2, 4, 8, 16, 59, 79, 118, 158, 236, 283, 316, 472, 566, 632, 944, 1132, 1264, 2264, 4528, 4661, 9322, 16697, 18644, 22357, 33394, 37288, 44714, 66788, 74576, 89428, 133576, 178856, 267152, 357712, 1319063, 2638126, 5276252, 10552504, 21105008]

約数ペア:

[(1, 21105008), (2, 10552504), (4, 5276252), (8, 2638126), (16, 1319063), (59, 357712), (79, 267152), (118, 178856), (158, 133576), (236, 89428), (283, 74576), (316, 66788), (472, 44714), (566, 37288), (632, 33394), (944, 22357), (1132, 18644), (1264, 16697), (2264, 9322), (4528, 4661)]