12780225

素因数分解:

$3^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{719}}^1$

素因数の和:814

約数の個数: 36

約数和(自身を含む): 23212800

約数和(自身を除く): 10432575

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 79, 225, 237, 395, 711, 719, 1185, 1975, 2157, 3555, 3595, 5925, 6471, 10785, 17775, 17975, 32355, 53925, 56801, 161775, 170403, 284005, 511209, 852015, 1420025, 2556045, 4260075, 12780225]

約数ペア:

[(1, 12780225), (3, 4260075), (5, 2556045), (9, 1420025), (15, 852015), (25, 511209), (45, 284005), (75, 170403), (79, 161775), (225, 56801), (237, 53925), (395, 32355), (711, 17975), (719, 17775), (1185, 10785), (1975, 6471), (2157, 5925), (3555, 3595)]