27998019

素因数分解:

$3^2\times 7^1\times {\mathrm{521}}^1\times {\mathrm{853}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 46361952

約数和(自身を除く): 18363933

約数列:

[1, 3, 7, 9, 21, 63, 521, 853, 1563, 2559, 3647, 4689, 5971, 7677, 10941, 17913, 32823, 53739, 444413, 1333239, 3110891, 3999717, 9332673, 27998019]

約数ペア:

[(1, 27998019), (3, 9332673), (7, 3999717), (9, 3110891), (21, 1333239), (63, 444413), (521, 53739), (853, 32823), (1563, 17913), (2559, 10941), (3647, 7677), (4689, 5971)]