9881991

素因数分解:

$3^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{691}}^1$

素因数の和:931

約数の個数: 24

約数和(自身を含む): 16408704

約数和(自身を除く): 6526713

約数列:

[1, 3, 7, 9, 21, 63, 227, 681, 691, 1589, 2043, 2073, 4767, 4837, 6219, 14301, 14511, 43533, 156857, 470571, 1097999, 1411713, 3293997, 9881991]

約数ペア:

[(1, 9881991), (3, 3293997), (7, 1411713), (9, 1097999), (21, 470571), (63, 156857), (227, 43533), (681, 14511), (691, 14301), (1589, 6219), (2043, 4837), (2073, 4767)]