20954025

素因数分解:

$3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{839}}^1$

素因数の和:895

約数の個数: 48

約数和(自身を含む): 39580800

約数和(自身を除く): 18626775

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 111, 135, 185, 225, 333, 555, 675, 839, 925, 999, 1665, 2517, 2775, 4195, 4995, 7551, 8325, 12585, 20975, 22653, 24975, 31043, 37755, 62925, 93129, 113265, 155215, 188775, 279387, 465645, 566325, 776075, 838161, 1396935, 2328225, 4190805, 6984675, 20954025]

約数ペア:

[(1, 20954025), (3, 6984675), (5, 4190805), (9, 2328225), (15, 1396935), (25, 838161), (27, 776075), (37, 566325), (45, 465645), (75, 279387), (111, 188775), (135, 155215), (185, 113265), (225, 93129), (333, 62925), (555, 37755), (675, 31043), (839, 24975), (925, 22653), (999, 20975), (1665, 12585), (2517, 8325), (2775, 7551), (4195, 4995)]