18180615

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 30260736

約数和(自身を除く): 12080121

約数列:

[1, 3, 5, 15, 43, 71, 129, 213, 215, 355, 397, 645, 1065, 1191, 1985, 3053, 5955, 9159, 15265, 17071, 28187, 45795, 51213, 84561, 85355, 140935, 256065, 422805, 1212041, 3636123, 6060205, 18180615]

約数ペア:

[(1, 18180615), (3, 6060205), (5, 3636123), (15, 1212041), (43, 422805), (71, 256065), (129, 140935), (213, 85355), (215, 84561), (355, 51213), (397, 45795), (645, 28187), (1065, 17071), (1191, 15265), (1985, 9159), (3053, 5955)]