20123573620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1693}}^1\times {\mathrm{7523}}^1$

素因数の和:9304

約数の個数: 48

約数和(自身を含む): 42825404160

約数和(自身を除く): 22701830540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 1693, 3386, 6772, 7523, 8465, 15046, 16930, 30092, 33860, 37615, 75230, 133747, 150460, 267494, 534988, 594317, 668735, 1188634, 1337470, 2377268, 2674940, 2971585, 5943170, 11886340, 12736439, 25472878, 50945756, 63682195, 127364390, 254728780, 1006178681, 2012357362, 4024714724, 5030893405, 10061786810, 20123573620]

約数ペア:

[(1, 20123573620), (2, 10061786810), (4, 5030893405), (5, 4024714724), (10, 2012357362), (20, 1006178681), (79, 254728780), (158, 127364390), (316, 63682195), (395, 50945756), (790, 25472878), (1580, 12736439), (1693, 11886340), (3386, 5943170), (6772, 2971585), (7523, 2674940), (8465, 2377268), (15046, 1337470), (16930, 1188634), (30092, 668735), (33860, 594317), (37615, 534988), (75230, 267494), (133747, 150460)]