20721580033

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{1964317}}^1$

素因数の和:1964472

約数の個数: 16

約数和(自身を含む): 26023284864

約数和(自身を除く): 5301704831

約数列:

[1, 7, 11, 77, 137, 959, 1507, 10549, 1964317, 13750219, 21607487, 151252409, 269111429, 1883780003, 2960225719, 20721580033]

約数ペア:

[(1, 20721580033), (7, 2960225719), (11, 1883780003), (77, 269111429), (137, 151252409), (959, 21607487), (1507, 13750219), (10549, 1964317)]