51249680

素因数分解:

$2^4\times 5^1\times {\mathrm{640621}}^1$

素因数の和:640634

約数の個数: 20

約数和(自身を含む): 119155692

約数和(自身を除く): 67906012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640621, 1281242, 2562484, 3203105, 5124968, 6406210, 10249936, 12812420, 25624840, 51249680]

約数ペア:

[(1, 51249680), (2, 25624840), (4, 12812420), (5, 10249936), (8, 6406210), (10, 5124968), (16, 3203105), (20, 2562484), (40, 1281242), (80, 640621)]