78789020

素因数分解:

$2^2\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{3821}}^1$

素因数の和:4861

約数の個数: 24

約数和(自身を含む): 165660768

約数和(自身を除く): 86871748

約数列:

[1, 2, 4, 5, 10, 20, 1031, 2062, 3821, 4124, 5155, 7642, 10310, 15284, 19105, 20620, 38210, 76420, 3939451, 7878902, 15757804, 19697255, 39394510, 78789020]

約数ペア:

[(1, 78789020), (2, 39394510), (4, 19697255), (5, 15757804), (10, 7878902), (20, 3939451), (1031, 76420), (2062, 38210), (3821, 20620), (4124, 19105), (5155, 15284), (7642, 10310)]