64467440

素因数分解:

$2^4\times 5^1\times {\mathrm{805843}}^1$

素因数の和:805856

約数の個数: 20

約数和(自身を含む): 149886984

約数和(自身を除く): 85419544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805843, 1611686, 3223372, 4029215, 6446744, 8058430, 12893488, 16116860, 32233720, 64467440]

約数ペア:

[(1, 64467440), (2, 32233720), (4, 16116860), (5, 12893488), (8, 8058430), (10, 6446744), (16, 4029215), (20, 3223372), (40, 1611686), (80, 805843)]