81125380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82781}}^1$

素因数の和:82804

約数の個数: 36

約数和(自身を含む): 198180108

約数和(自身を除く): 117054728

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82781, 165562, 331124, 413905, 579467, 827810, 1158934, 1655620, 2317868, 2897335, 4056269, 5794670, 8112538, 11589340, 16225076, 20281345, 40562690, 81125380]

約数ペア:

[(1, 81125380), (2, 40562690), (4, 20281345), (5, 16225076), (7, 11589340), (10, 8112538), (14, 5794670), (20, 4056269), (28, 2897335), (35, 2317868), (49, 1655620), (70, 1158934), (98, 827810), (140, 579467), (196, 413905), (245, 331124), (490, 165562), (980, 82781)]