21092715

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2309}}^1$

素因数の和:2356

約数の個数: 48

約数和(自身を含む): 43243200

約数和(自身を除く): 22150485

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 63, 87, 105, 145, 203, 261, 315, 435, 609, 1015, 1305, 1827, 2309, 3045, 6927, 9135, 11545, 16163, 20781, 34635, 48489, 66961, 80815, 103905, 145467, 200883, 242445, 334805, 468727, 602649, 727335, 1004415, 1406181, 2343635, 3013245, 4218543, 7030905, 21092715]

約数ペア:

[(1, 21092715), (3, 7030905), (5, 4218543), (7, 3013245), (9, 2343635), (15, 1406181), (21, 1004415), (29, 727335), (35, 602649), (45, 468727), (63, 334805), (87, 242445), (105, 200883), (145, 145467), (203, 103905), (261, 80815), (315, 66961), (435, 48489), (609, 34635), (1015, 20781), (1305, 16163), (1827, 11545), (2309, 9135), (3045, 6927)]