18380055

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 32108544

約数和(自身を除く): 13728489

約数列:

[1, 3, 5, 15, 29, 31, 47, 87, 93, 141, 145, 155, 235, 435, 465, 705, 841, 899, 1363, 1457, 2523, 2697, 4089, 4205, 4371, 4495, 6815, 7285, 12615, 13485, 20445, 21855, 26071, 39527, 42253, 78213, 118581, 126759, 130355, 197635, 211265, 391065, 592905, 633795, 1225337, 3676011, 6126685, 18380055]

約数ペア:

[(1, 18380055), (3, 6126685), (5, 3676011), (15, 1225337), (29, 633795), (31, 592905), (47, 391065), (87, 211265), (93, 197635), (141, 130355), (145, 126759), (155, 118581), (235, 78213), (435, 42253), (465, 39527), (705, 26071), (841, 21855), (899, 20445), (1363, 13485), (1457, 12615), (2523, 7285), (2697, 6815), (4089, 4495), (4205, 4371)]