27990333

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 50872320

約数和(自身を除く): 22881987

約数列:

[1, 3, 7, 9, 21, 23, 27, 47, 63, 69, 137, 141, 161, 189, 207, 329, 411, 423, 483, 621, 959, 987, 1081, 1233, 1269, 1449, 2877, 2961, 3151, 3243, 3699, 4347, 6439, 7567, 8631, 8883, 9453, 9729, 19317, 22057, 22701, 25893, 28359, 29187, 45073, 57951, 66171, 68103, 85077, 135219, 148097, 173853, 198513, 204309, 405657, 444291, 595539, 1036679, 1216971, 1332873, 3110037, 3998619, 9330111, 27990333]

約数ペア:

[(1, 27990333), (3, 9330111), (7, 3998619), (9, 3110037), (21, 1332873), (23, 1216971), (27, 1036679), (47, 595539), (63, 444291), (69, 405657), (137, 204309), (141, 198513), (161, 173853), (189, 148097), (207, 135219), (329, 85077), (411, 68103), (423, 66171), (483, 57951), (621, 45073), (959, 29187), (987, 28359), (1081, 25893), (1233, 22701), (1269, 22057), (1449, 19317), (2877, 9729), (2961, 9453), (3151, 8883), (3243, 8631), (3699, 7567), (4347, 6439)]