27985905

素因数分解:

$3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1607}}^1$

素因数の和:1667

約数の個数: 40

約数和(自身を含む): 51365952

約数和(自身を除く): 23380047

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 81, 129, 135, 215, 387, 405, 645, 1161, 1607, 1935, 3483, 4821, 5805, 8035, 14463, 17415, 24105, 43389, 69101, 72315, 130167, 207303, 216945, 345505, 621909, 650835, 1036515, 1865727, 3109545, 5597181, 9328635, 27985905]

約数ペア:

[(1, 27985905), (3, 9328635), (5, 5597181), (9, 3109545), (15, 1865727), (27, 1036515), (43, 650835), (45, 621909), (81, 345505), (129, 216945), (135, 207303), (215, 130167), (387, 72315), (405, 69101), (645, 43389), (1161, 24105), (1607, 17415), (1935, 14463), (3483, 8035), (4821, 5805)]