21811856

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{123931}}^1$

素因数の和:123950

約数の個数: 20

約数和(自身を含む): 46102704

約数和(自身を除く): 24290848

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 123931, 247862, 495724, 991448, 1363241, 1982896, 2726482, 5452964, 10905928, 21811856]

約数ペア:

[(1, 21811856), (2, 10905928), (4, 5452964), (8, 2726482), (11, 1982896), (16, 1363241), (22, 991448), (44, 495724), (88, 247862), (176, 123931)]