18363891

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{491}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 30417408

約数和(自身を除く): 12053517

約数列:

[1, 3, 7, 13, 21, 39, 91, 137, 273, 411, 491, 959, 1473, 1781, 2877, 3437, 5343, 6383, 10311, 12467, 19149, 37401, 44681, 67267, 134043, 201801, 470869, 874471, 1412607, 2623413, 6121297, 18363891]

約数ペア:

[(1, 18363891), (3, 6121297), (7, 2623413), (13, 1412607), (21, 874471), (39, 470869), (91, 201801), (137, 134043), (273, 67267), (411, 44681), (491, 37401), (959, 19149), (1473, 12467), (1781, 10311), (2877, 6383), (3437, 5343)]