64766420

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{19867}}^1$

素因数の和:20039

約数の個数: 24

約数和(自身を含む): 136850784

約数和(自身を除く): 72084364

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 19867, 39734, 79468, 99335, 198670, 397340, 3238321, 6476642, 12953284, 16191605, 32383210, 64766420]

約数ペア:

[(1, 64766420), (2, 32383210), (4, 16191605), (5, 12953284), (10, 6476642), (20, 3238321), (163, 397340), (326, 198670), (652, 99335), (815, 79468), (1630, 39734), (3260, 19867)]