81563950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4327}}^1$

素因数の和:4381

約数の個数: 48

約数和(自身を含む): 169051680

約数和(自身を除く): 87487730

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, 4327, 8654, 9425, 18850, 21635, 43270, 56251, 108175, 112502, 125483, 216350, 250966, 281255, 562510, 627415, 1254830, 1406275, 1631279, 2812550, 3137075, 3262558, 6274150, 8156395, 16312790, 40781975, 81563950]

約数ペア:

[(1, 81563950), (2, 40781975), (5, 16312790), (10, 8156395), (13, 6274150), (25, 3262558), (26, 3137075), (29, 2812550), (50, 1631279), (58, 1406275), (65, 1254830), (130, 627415), (145, 562510), (290, 281255), (325, 250966), (377, 216350), (650, 125483), (725, 112502), (754, 108175), (1450, 56251), (1885, 43270), (3770, 21635), (4327, 18850), (8654, 9425)]