640515578

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{65479}}^1$

素因数の和:65621

約数の個数: 16

約数和(自身を含む): 988486080

約数和(自身を除く): 347970502

約数列:

[1, 2, 67, 73, 134, 146, 4891, 9782, 65479, 130958, 4387093, 4779967, 8774186, 9559934, 320257789, 640515578]

約数ペア:

[(1, 640515578), (2, 320257789), (67, 9559934), (73, 8774186), (134, 4779967), (146, 4387093), (4891, 130958), (9782, 65479)]