21887271

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1601}}^1$

素因数の和:1652

約数の個数: 36

約数和(自身を含む): 37986624

約数和(自身を除く): 16099353

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1519, 1601, 1953, 4557, 4803, 11207, 13671, 14409, 33621, 49631, 78449, 100863, 148893, 235347, 347417, 446679, 706041, 1042251, 2431919, 3126753, 7295757, 21887271]

約数ペア:

[(1, 21887271), (3, 7295757), (7, 3126753), (9, 2431919), (21, 1042251), (31, 706041), (49, 446679), (63, 347417), (93, 235347), (147, 148893), (217, 100863), (279, 78449), (441, 49631), (651, 33621), (1519, 14409), (1601, 13671), (1953, 11207), (4557, 4803)]