20184488380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{363161}}^1$

素因数の和:363574

約数の個数: 48

約数和(自身を含む): 48564927936

約数和(自身を除く): 28380439556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 397, 794, 1588, 1985, 2779, 3970, 5558, 7940, 11116, 13895, 27790, 55580, 363161, 726322, 1452644, 1815805, 2542127, 3631610, 5084254, 7263220, 10168508, 12710635, 25421270, 50842540, 144174917, 288349834, 576699668, 720874585, 1009224419, 1441749170, 2018448838, 2883498340, 4036897676, 5046122095, 10092244190, 20184488380]

約数ペア:

[(1, 20184488380), (2, 10092244190), (4, 5046122095), (5, 4036897676), (7, 2883498340), (10, 2018448838), (14, 1441749170), (20, 1009224419), (28, 720874585), (35, 576699668), (70, 288349834), (140, 144174917), (397, 50842540), (794, 25421270), (1588, 12710635), (1985, 10168508), (2779, 7263220), (3970, 5084254), (5558, 3631610), (7940, 2542127), (11116, 1815805), (13895, 1452644), (27790, 726322), (55580, 363161)]