19917460

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1213}}^1$

素因数の和:2043

約数の個数: 24

約数和(自身を含む): 41912136

約数和(自身を除く): 21994676

約数列:

[1, 2, 4, 5, 10, 20, 821, 1213, 1642, 2426, 3284, 4105, 4852, 6065, 8210, 12130, 16420, 24260, 995873, 1991746, 3983492, 4979365, 9958730, 19917460]

約数ペア:

[(1, 19917460), (2, 9958730), (4, 4979365), (5, 3983492), (10, 1991746), (20, 995873), (821, 24260), (1213, 16420), (1642, 12130), (2426, 8210), (3284, 6065), (4105, 4852)]