199910815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{823}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 268281216

約数和(自身を除く): 68370401

約数列:

[1, 5, 13, 37, 65, 101, 185, 481, 505, 823, 1313, 2405, 3737, 4115, 6565, 10699, 18685, 30451, 48581, 53495, 83123, 152255, 242905, 395863, 415615, 1080599, 1979315, 3075551, 5402995, 15377755, 39982163, 199910815]

約数ペア:

[(1, 199910815), (5, 39982163), (13, 15377755), (37, 5402995), (65, 3075551), (101, 1979315), (185, 1080599), (481, 415615), (505, 395863), (823, 242905), (1313, 152255), (2405, 83123), (3737, 53495), (4115, 48581), (6565, 30451), (10699, 18685)]