21601895

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2383}}^1$

素因数の和:2439

約数の個数: 24

約数和(自身を含む): 30982464

約数和(自身を除く): 9380569

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 2383, 9065, 11915, 16681, 83405, 88171, 116767, 440855, 583835, 617197, 3085985, 4320379, 21601895]

約数ペア:

[(1, 21601895), (5, 4320379), (7, 3085985), (35, 617197), (37, 583835), (49, 440855), (185, 116767), (245, 88171), (259, 83405), (1295, 16681), (1813, 11915), (2383, 9065)]