64408760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123863}}^1$

素因数の和:123887

約数の個数: 32

約数和(自身を含む): 156068640

約数和(自身を除く): 91659880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 123863, 247726, 495452, 619315, 990904, 1238630, 1610219, 2477260, 3220438, 4954520, 6440876, 8051095, 12881752, 16102190, 32204380, 64408760]

約数ペア:

[(1, 64408760), (2, 32204380), (4, 16102190), (5, 12881752), (8, 8051095), (10, 6440876), (13, 4954520), (20, 3220438), (26, 2477260), (40, 1610219), (52, 1238630), (65, 990904), (104, 619315), (130, 495452), (260, 247726), (520, 123863)]