20145645

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{883}}^1$

素因数の和:923

約数の個数: 48

約数和(自身を含む): 38825280

約数和(自身を除く): 18679635

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 169, 195, 351, 507, 585, 845, 883, 1521, 1755, 2535, 2649, 4415, 4563, 7605, 7947, 11479, 13245, 22815, 23841, 34437, 39735, 57395, 103311, 119205, 149227, 172185, 309933, 447681, 516555, 746135, 1343043, 1549665, 2238405, 4029129, 6715215, 20145645]

約数ペア:

[(1, 20145645), (3, 6715215), (5, 4029129), (9, 2238405), (13, 1549665), (15, 1343043), (27, 746135), (39, 516555), (45, 447681), (65, 309933), (117, 172185), (135, 149227), (169, 119205), (195, 103311), (351, 57395), (507, 39735), (585, 34437), (845, 23841), (883, 22815), (1521, 13245), (1755, 11479), (2535, 7947), (2649, 7605), (4415, 4563)]