72457040

素因数分解:

$2^4\times 5^1\times {\mathrm{905713}}^1$

素因数の和:905726

約数の個数: 20

約数和(自身を含む): 168462804

約数和(自身を除く): 96005764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 905713, 1811426, 3622852, 4528565, 7245704, 9057130, 14491408, 18114260, 36228520, 72457040]

約数ペア:

[(1, 72457040), (2, 36228520), (4, 18114260), (5, 14491408), (8, 9057130), (10, 7245704), (16, 4528565), (20, 3622852), (40, 1811426), (80, 905713)]