78922420

素因数分解:

$2^2\times 5^1\times {\mathrm{1889}}^1\times {\mathrm{2089}}^1$

素因数の和:3987

約数の個数: 24

約数和(自身を含む): 165904200

約数和(自身を除く): 86981780

約数列:

[1, 2, 4, 5, 10, 20, 1889, 2089, 3778, 4178, 7556, 8356, 9445, 10445, 18890, 20890, 37780, 41780, 3946121, 7892242, 15784484, 19730605, 39461210, 78922420]

約数ペア:

[(1, 78922420), (2, 39461210), (4, 19730605), (5, 15784484), (10, 7892242), (20, 3946121), (1889, 41780), (2089, 37780), (3778, 20890), (4178, 18890), (7556, 10445), (8356, 9445)]