20882790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{701}}^1$

素因数の和:1045

約数の個数: 48

約数和(自身を含む): 54536976

約数和(自身を除く): 33654186

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 331, 662, 701, 993, 1402, 1655, 1986, 2103, 2979, 3310, 3505, 4206, 4965, 5958, 6309, 7010, 9930, 10515, 12618, 14895, 21030, 29790, 31545, 63090, 232031, 464062, 696093, 1160155, 1392186, 2088279, 2320310, 3480465, 4176558, 6960930, 10441395, 20882790]

約数ペア:

[(1, 20882790), (2, 10441395), (3, 6960930), (5, 4176558), (6, 3480465), (9, 2320310), (10, 2088279), (15, 1392186), (18, 1160155), (30, 696093), (45, 464062), (90, 232031), (331, 63090), (662, 31545), (701, 29790), (993, 21030), (1402, 14895), (1655, 12618), (1986, 10515), (2103, 9930), (2979, 7010), (3310, 6309), (3505, 5958), (4206, 4965)]