399960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 1432080

約数和(自身を除く): 1032120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 101, 110, 120, 132, 165, 180, 198, 202, 220, 264, 303, 330, 360, 396, 404, 440, 495, 505, 606, 660, 792, 808, 909, 990, 1010, 1111, 1212, 1320, 1515, 1818, 1980, 2020, 2222, 2424, 3030, 3333, 3636, 3960, 4040, 4444, 4545, 5555, 6060, 6666, 7272, 8888, 9090, 9999, 11110, 12120, 13332, 16665, 18180, 19998, 22220, 26664, 33330, 36360, 39996, 44440, 49995, 66660, 79992, 99990, 133320, 199980, 399960]

約数ペア:

[(1, 399960), (2, 199980), (3, 133320), (4, 99990), (5, 79992), (6, 66660), (8, 49995), (9, 44440), (10, 39996), (11, 36360), (12, 33330), (15, 26664), (18, 22220), (20, 19998), (22, 18180), (24, 16665), (30, 13332), (33, 12120), (36, 11110), (40, 9999), (44, 9090), (45, 8888), (55, 7272), (60, 6666), (66, 6060), (72, 5555), (88, 4545), (90, 4444), (99, 4040), (101, 3960), (110, 3636), (120, 3333), (132, 3030), (165, 2424), (180, 2222), (198, 2020), (202, 1980), (220, 1818), (264, 1515), (303, 1320), (330, 1212), (360, 1111), (396, 1010), (404, 990), (440, 909), (495, 808), (505, 792), (606, 660)]