81996880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{146423}}^1$

素因数の和:146443

約数の個数: 40

約数和(自身を含む): 217878912

約数和(自身を除く): 135882032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 146423, 292846, 585692, 732115, 1024961, 1171384, 1464230, 2049922, 2342768, 2928460, 4099844, 5124805, 5856920, 8199688, 10249610, 11713840, 16399376, 20499220, 40998440, 81996880]

約数ペア:

[(1, 81996880), (2, 40998440), (4, 20499220), (5, 16399376), (7, 11713840), (8, 10249610), (10, 8199688), (14, 5856920), (16, 5124805), (20, 4099844), (28, 2928460), (35, 2342768), (40, 2049922), (56, 1464230), (70, 1171384), (80, 1024961), (112, 732115), (140, 585692), (280, 292846), (560, 146423)]