21530818

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:274

約数の個数: 32

約数和(自身を含む): 35020800

約数和(自身を除く): 13489982

約数列:

[1, 2, 29, 37, 58, 74, 79, 127, 158, 254, 1073, 2146, 2291, 2923, 3683, 4582, 4699, 5846, 7366, 9398, 10033, 20066, 84767, 136271, 169534, 272542, 290957, 371221, 581914, 742442, 10765409, 21530818]

約数ペア:

[(1, 21530818), (2, 10765409), (29, 742442), (37, 581914), (58, 371221), (74, 290957), (79, 272542), (127, 169534), (158, 136271), (254, 84767), (1073, 20066), (2146, 10033), (2291, 9398), (2923, 7366), (3683, 5846), (4582, 4699)]