19957730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{153521}}^1$

素因数の和:153541

約数の個数: 16

約数和(自身を含む): 38687544

約数和(自身を除く): 18729814

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 153521, 307042, 767605, 1535210, 1995773, 3991546, 9978865, 19957730]

約数ペア:

[(1, 19957730), (2, 9978865), (5, 3991546), (10, 1995773), (13, 1535210), (26, 767605), (65, 307042), (130, 153521)]