65020720

素因数分解:

$2^4\times 5^1\times {\mathrm{812759}}^1$

素因数の和:812772

約数の個数: 20

約数和(自身を含む): 151173360

約数和(自身を除く): 86152640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 812759, 1625518, 3251036, 4063795, 6502072, 8127590, 13004144, 16255180, 32510360, 65020720]

約数ペア:

[(1, 65020720), (2, 32510360), (4, 16255180), (5, 13004144), (8, 8127590), (10, 6502072), (16, 4063795), (20, 3251036), (40, 1625518), (80, 812759)]