64974640

素因数分解:

$2^4\times 5^1\times {\mathrm{812183}}^1$

素因数の和:812196

約数の個数: 20

約数和(自身を含む): 151066224

約数和(自身を除く): 86091584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 812183, 1624366, 3248732, 4060915, 6497464, 8121830, 12994928, 16243660, 32487320, 64974640]

約数ペア:

[(1, 64974640), (2, 32487320), (4, 16243660), (5, 12994928), (8, 8121830), (10, 6497464), (16, 4060915), (20, 3248732), (40, 1624366), (80, 812183)]