81298736

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{123931}}^1$

素因数の和:123980

約数の個数: 20

約数和(自身を含む): 161359464

約数和(自身を除く): 80060728

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 123931, 247862, 495724, 991448, 1982896, 5081171, 10162342, 20324684, 40649368, 81298736]

約数ペア:

[(1, 81298736), (2, 40649368), (4, 20324684), (8, 10162342), (16, 5081171), (41, 1982896), (82, 991448), (164, 495724), (328, 247862), (656, 123931)]