490390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 32

約数和(自身を含む): 972000

約数和(自身を除く): 481610

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 89, 95, 145, 178, 190, 290, 445, 551, 890, 1102, 1691, 2581, 2755, 3382, 5162, 5510, 8455, 12905, 16910, 25810, 49039, 98078, 245195, 490390]

約数ペア:

[(1, 490390), (2, 245195), (5, 98078), (10, 49039), (19, 25810), (29, 16910), (38, 12905), (58, 8455), (89, 5510), (95, 5162), (145, 3382), (178, 2755), (190, 2581), (290, 1691), (445, 1102), (551, 890)]