20803005

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{839}}^1$

素因数の和:898

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 18508995

約数列:

[1, 3, 5, 9, 15, 19, 29, 45, 57, 87, 95, 145, 171, 261, 285, 435, 551, 839, 855, 1305, 1653, 2517, 2755, 4195, 4959, 7551, 8265, 12585, 15941, 24331, 24795, 37755, 47823, 72993, 79705, 121655, 143469, 218979, 239115, 364965, 462289, 717345, 1094895, 1386867, 2311445, 4160601, 6934335, 20803005]

約数ペア:

[(1, 20803005), (3, 6934335), (5, 4160601), (9, 2311445), (15, 1386867), (19, 1094895), (29, 717345), (45, 462289), (57, 364965), (87, 239115), (95, 218979), (145, 143469), (171, 121655), (261, 79705), (285, 72993), (435, 47823), (551, 37755), (839, 24795), (855, 24331), (1305, 15941), (1653, 12585), (2517, 8265), (2755, 7551), (4195, 4959)]