21071764

素因数分解:

$2^2\times 7^2\times {\mathrm{107509}}^1$

素因数の和:107527

約数の個数: 18

約数和(自身を含む): 42896490

約数和(自身を除く): 21824726

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 107509, 215018, 430036, 752563, 1505126, 3010252, 5267941, 10535882, 21071764]

約数ペア:

[(1, 21071764), (2, 10535882), (4, 5267941), (7, 3010252), (14, 1505126), (28, 752563), (49, 430036), (98, 215018), (196, 107509)]