20988136

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201809}}^1$

素因数の和:201828

約数の個数: 16

約数和(自身を含む): 42380100

約数和(自身を除く): 21391964

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201809, 403618, 807236, 1614472, 2623517, 5247034, 10494068, 20988136]

約数ペア:

[(1, 20988136), (2, 10494068), (4, 5247034), (8, 2623517), (13, 1614472), (26, 807236), (52, 403618), (104, 201809)]