21081880

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8933}}^1$

素因数の和:9003

約数の個数: 32

約数和(自身を含む): 48243600

約数和(自身を除く): 27161720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 8933, 17866, 35732, 44665, 71464, 89330, 178660, 357320, 527047, 1054094, 2108188, 2635235, 4216376, 5270470, 10540940, 21081880]

約数ペア:

[(1, 21081880), (2, 10540940), (4, 5270470), (5, 4216376), (8, 2635235), (10, 2108188), (20, 1054094), (40, 527047), (59, 357320), (118, 178660), (236, 89330), (295, 71464), (472, 44665), (590, 35732), (1180, 17866), (2360, 8933)]