129910640

素因数分解:

$2^4\times 5^1\times {\mathrm{1623883}}^1$

素因数の和:1623896

約数の個数: 20

約数和(自身を含む): 302042424

約数和(自身を除く): 172131784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1623883, 3247766, 6495532, 8119415, 12991064, 16238830, 25982128, 32477660, 64955320, 129910640]

約数ペア:

[(1, 129910640), (2, 64955320), (4, 32477660), (5, 25982128), (8, 16238830), (10, 12991064), (16, 8119415), (20, 6495532), (40, 3247766), (80, 1623883)]