820990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:204

約数の個数: 32

約数和(自身を含む): 1620000

約数和(自身を除く): 799010

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 95, 145, 149, 190, 290, 298, 551, 745, 1102, 1490, 2755, 2831, 4321, 5510, 5662, 8642, 14155, 21605, 28310, 43210, 82099, 164198, 410495, 820990]

約数ペア:

[(1, 820990), (2, 410495), (5, 164198), (10, 82099), (19, 43210), (29, 28310), (38, 21605), (58, 14155), (95, 8642), (145, 5662), (149, 5510), (190, 4321), (290, 2831), (298, 2755), (551, 1490), (745, 1102)]