20263145

素因数分解:

$5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{8641}}^1$

素因数の和:8720

約数の個数: 16

約数和(自身を含む): 28207488

約数和(自身を除く): 7944343

約数列:

[1, 5, 7, 35, 67, 335, 469, 2345, 8641, 43205, 60487, 302435, 578947, 2894735, 4052629, 20263145]

約数ペア:

[(1, 20263145), (5, 4052629), (7, 2894735), (35, 578947), (67, 302435), (335, 60487), (469, 43205), (2345, 8641)]