2038990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:204

約数の個数: 32

約数和(自身を含む): 3888000

約数和(自身を除く): 1849010

約数列:

[1, 2, 5, 10, 29, 58, 79, 89, 145, 158, 178, 290, 395, 445, 790, 890, 2291, 2581, 4582, 5162, 7031, 11455, 12905, 14062, 22910, 25810, 35155, 70310, 203899, 407798, 1019495, 2038990]

約数ペア:

[(1, 2038990), (2, 1019495), (5, 407798), (10, 203899), (29, 70310), (58, 35155), (79, 25810), (89, 22910), (145, 14062), (158, 12905), (178, 11455), (290, 7031), (395, 5162), (445, 4582), (790, 2581), (890, 2291)]