1987821

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:143

約数の個数: 40

約数和(自身を含む): 3415104

約数和(自身を除く): 1427283

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 81, 97, 99, 207, 253, 291, 297, 621, 759, 873, 891, 1067, 1863, 2231, 2277, 2619, 3201, 6693, 6831, 7857, 9603, 20079, 20493, 24541, 28809, 60237, 73623, 86427, 180711, 220869, 662607, 1987821]

約数ペア:

[(1, 1987821), (3, 662607), (9, 220869), (11, 180711), (23, 86427), (27, 73623), (33, 60237), (69, 28809), (81, 24541), (97, 20493), (99, 20079), (207, 9603), (253, 7857), (291, 6831), (297, 6693), (621, 3201), (759, 2619), (873, 2277), (891, 2231), (1067, 1863)]