21278108

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{1319}}^1$

素因数の和:1469

約数の個数: 24

約数和(自身を含む): 38623200

約数和(自身を除く): 17345092

約数列:

[1, 2, 4, 37, 74, 109, 148, 218, 436, 1319, 2638, 4033, 5276, 8066, 16132, 48803, 97606, 143771, 195212, 287542, 575084, 5319527, 10639054, 21278108]

約数ペア:

[(1, 21278108), (2, 10639054), (4, 5319527), (37, 575084), (74, 287542), (109, 195212), (148, 143771), (218, 97606), (436, 48803), (1319, 16132), (2638, 8066), (4033, 5276)]