64966420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{45751}}^1$

素因数の和:45831

約数の個数: 24

約数和(自身を含む): 138354048

約数和(自身を除く): 73387628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 45751, 91502, 183004, 228755, 457510, 915020, 3248321, 6496642, 12993284, 16241605, 32483210, 64966420]

約数ペア:

[(1, 64966420), (2, 32483210), (4, 16241605), (5, 12993284), (10, 6496642), (20, 3248321), (71, 915020), (142, 457510), (284, 228755), (355, 183004), (710, 91502), (1420, 45751)]