21115508816

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19697303}}^1$

素因数の和:19697378

約数の個数: 20

約数和(自身を含む): 41521916832

約数和(自身を除く): 20406408016

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19697303, 39394606, 78789212, 157578424, 315156848, 1319719301, 2639438602, 5278877204, 10557754408, 21115508816]

約数ペア:

[(1, 21115508816), (2, 10557754408), (4, 5278877204), (8, 2639438602), (16, 1319719301), (67, 315156848), (134, 157578424), (268, 78789212), (536, 39394606), (1072, 19697303)]