1621745

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:464

約数の個数: 16

約数和(自身を含む): 2101440

約数和(自身を除く): 479695

約数列:

[1, 5, 19, 43, 95, 215, 397, 817, 1985, 4085, 7543, 17071, 37715, 85355, 324349, 1621745]

約数ペア:

[(1, 1621745), (5, 324349), (19, 85355), (43, 37715), (95, 17071), (215, 7543), (397, 4085), (817, 1985)]