64340380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247463}}^1$

素因数の和:247485

約数の個数: 24

約数和(自身を含む): 145508832

約数和(自身を除く): 81168452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 247463, 494926, 989852, 1237315, 2474630, 3217019, 4949260, 6434038, 12868076, 16085095, 32170190, 64340380]

約数ペア:

[(1, 64340380), (2, 32170190), (4, 16085095), (5, 12868076), (10, 6434038), (13, 4949260), (20, 3217019), (26, 2474630), (52, 1237315), (65, 989852), (130, 494926), (260, 247463)]