20145555

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 36560160

約数和(自身を除く): 16414605

約数列:

[1, 3, 5, 9, 15, 41, 45, 61, 123, 179, 183, 205, 305, 369, 537, 549, 615, 895, 915, 1611, 1845, 2501, 2685, 2745, 7339, 7503, 8055, 10919, 12505, 22017, 22509, 32757, 36695, 37515, 54595, 66051, 98271, 110085, 112545, 163785, 330255, 447679, 491355, 1343037, 2238395, 4029111, 6715185, 20145555]

約数ペア:

[(1, 20145555), (3, 6715185), (5, 4029111), (9, 2238395), (15, 1343037), (41, 491355), (45, 447679), (61, 330255), (123, 163785), (179, 112545), (183, 110085), (205, 98271), (305, 66051), (369, 54595), (537, 37515), (549, 36695), (615, 32757), (895, 22509), (915, 22017), (1611, 12505), (1845, 10919), (2501, 8055), (2685, 7503), (2745, 7339)]