129420890

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{54151}}^1$

素因数の和:54397

約数の個数: 16

約数和(自身を含む): 233936640

約数和(自身を除く): 104515750

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 54151, 108302, 270755, 541510, 12942089, 25884178, 64710445, 129420890]

約数ペア:

[(1, 129420890), (2, 64710445), (5, 25884178), (10, 12942089), (239, 541510), (478, 270755), (1195, 108302), (2390, 54151)]