20180277

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{997}}^1$

素因数の和:1189

約数の個数: 24

約数和(自身を含む): 31604664

約数和(自身を除く): 11424387

約数列:

[1, 3, 9, 13, 39, 117, 173, 519, 997, 1557, 2249, 2991, 6747, 8973, 12961, 20241, 38883, 116649, 172481, 517443, 1552329, 2242253, 6726759, 20180277]

約数ペア:

[(1, 20180277), (3, 6726759), (9, 2242253), (13, 1552329), (39, 517443), (117, 172481), (173, 116649), (519, 38883), (997, 20241), (1557, 12961), (2249, 8973), (2991, 6747)]