21803990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{937}}^1$

素因数の和:1136

約数の個数: 32

約数和(自身を含む): 42547680

約数和(自身を除く): 20743690

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 179, 358, 895, 937, 1790, 1874, 2327, 4654, 4685, 9370, 11635, 12181, 23270, 24362, 60905, 121810, 167723, 335446, 838615, 1677230, 2180399, 4360798, 10901995, 21803990]

約数ペア:

[(1, 21803990), (2, 10901995), (5, 4360798), (10, 2180399), (13, 1677230), (26, 838615), (65, 335446), (130, 167723), (179, 121810), (358, 60905), (895, 24362), (937, 23270), (1790, 12181), (1874, 11635), (2327, 9370), (4654, 4685)]