20901843

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{3943}}^1$

素因数の和:3999

約数の個数: 24

約数和(自身を含む): 32814080

約数和(自身を除く): 11912237

約数列:

[1, 3, 9, 19, 31, 57, 93, 171, 279, 589, 1767, 3943, 5301, 11829, 35487, 74917, 122233, 224751, 366699, 674253, 1100097, 2322427, 6967281, 20901843]

約数ペア:

[(1, 20901843), (3, 6967281), (9, 2322427), (19, 1100097), (31, 674253), (57, 366699), (93, 224751), (171, 122233), (279, 74917), (589, 35487), (1767, 11829), (3943, 5301)]