20860390

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{613}}^1$

素因数の和:744

約数の個数: 32

約数和(自身を含む): 38991456

約数和(自身を除く): 18131066

約数列:

[1, 2, 5, 10, 41, 82, 83, 166, 205, 410, 415, 613, 830, 1226, 3065, 3403, 6130, 6806, 17015, 25133, 34030, 50266, 50879, 101758, 125665, 251330, 254395, 508790, 2086039, 4172078, 10430195, 20860390]

約数ペア:

[(1, 20860390), (2, 10430195), (5, 4172078), (10, 2086039), (41, 508790), (82, 254395), (83, 251330), (166, 125665), (205, 101758), (410, 50879), (415, 50266), (613, 34030), (830, 25133), (1226, 17015), (3065, 6806), (3403, 6130)]