21040340

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{6967}}^1$

素因数の和:7127

約数の個数: 24

約数和(自身を含む): 44483712

約数和(自身を除く): 23443372

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 6967, 13934, 27868, 34835, 69670, 139340, 1052017, 2104034, 4208068, 5260085, 10520170, 21040340]

約数ペア:

[(1, 21040340), (2, 10520170), (4, 5260085), (5, 4208068), (10, 2104034), (20, 1052017), (151, 139340), (302, 69670), (604, 34835), (755, 27868), (1510, 13934), (3020, 6967)]