51890420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{63281}}^1$

素因数の和:63331

約数の個数: 24

約数和(自身を含む): 111629448

約数和(自身を除く): 59739028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 63281, 126562, 253124, 316405, 632810, 1265620, 2594521, 5189042, 10378084, 12972605, 25945210, 51890420]

約数ペア:

[(1, 51890420), (2, 25945210), (4, 12972605), (5, 10378084), (10, 5189042), (20, 2594521), (41, 1265620), (82, 632810), (164, 316405), (205, 253124), (410, 126562), (820, 63281)]