20401225490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5651309}}^1$

素因数の和:5651354

約数の個数: 24

約数和(自身を含む): 38756683980

約数和(自身を除く): 18355458490

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 5651309, 11302618, 28256545, 56513090, 107374871, 214749742, 536874355, 1073748710, 2040122549, 4080245098, 10200612745, 20401225490]

約数ペア:

[(1, 20401225490), (2, 10200612745), (5, 4080245098), (10, 2040122549), (19, 1073748710), (38, 536874355), (95, 214749742), (190, 107374871), (361, 56513090), (722, 28256545), (1805, 11302618), (3610, 5651309)]