20921369950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1109887}}^1$

素因数の和:1109941

約数の個数: 48

約数和(自身を含む): 43352225280

約数和(自身を除く): 22430855330

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 50, 58, 65, 130, 145, 290, 325, 377, 650, 725, 754, 1450, 1885, 3770, 9425, 18850, 1109887, 2219774, 5549435, 11098870, 14428531, 27747175, 28857062, 32186723, 55494350, 64373446, 72142655, 144285310, 160933615, 321867230, 360713275, 418427399, 721426550, 804668075, 836854798, 1609336150, 2092136995, 4184273990, 10460684975, 20921369950]

約数ペア:

[(1, 20921369950), (2, 10460684975), (5, 4184273990), (10, 2092136995), (13, 1609336150), (25, 836854798), (26, 804668075), (29, 721426550), (50, 418427399), (58, 360713275), (65, 321867230), (130, 160933615), (145, 144285310), (290, 72142655), (325, 64373446), (377, 55494350), (650, 32186723), (725, 28857062), (754, 27747175), (1450, 14428531), (1885, 11098870), (3770, 5549435), (9425, 2219774), (18850, 1109887)]