1980990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:79

約数の個数: 128

約数和(自身を含む): 6220800

約数和(自身を除く): 4239810

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 23, 27, 29, 30, 33, 45, 46, 54, 55, 58, 66, 69, 87, 90, 99, 110, 115, 135, 138, 145, 165, 174, 198, 207, 230, 253, 261, 270, 290, 297, 319, 330, 345, 414, 435, 495, 506, 522, 594, 621, 638, 667, 690, 759, 783, 870, 957, 990, 1035, 1242, 1265, 1305, 1334, 1485, 1518, 1566, 1595, 1914, 2001, 2070, 2277, 2530, 2610, 2871, 2970, 3105, 3190, 3335, 3795, 3915, 4002, 4554, 4785, 5742, 6003, 6210, 6670, 6831, 7337, 7590, 7830, 8613, 9570, 10005, 11385, 12006, 13662, 14355, 14674, 17226, 18009, 20010, 22011, 22770, 28710, 30015, 34155, 36018, 36685, 43065, 44022, 60030, 66033, 68310, 73370, 86130, 90045, 110055, 132066, 180090, 198099, 220110, 330165, 396198, 660330, 990495, 1980990]

約数ペア:

[(1, 1980990), (2, 990495), (3, 660330), (5, 396198), (6, 330165), (9, 220110), (10, 198099), (11, 180090), (15, 132066), (18, 110055), (22, 90045), (23, 86130), (27, 73370), (29, 68310), (30, 66033), (33, 60030), (45, 44022), (46, 43065), (54, 36685), (55, 36018), (58, 34155), (66, 30015), (69, 28710), (87, 22770), (90, 22011), (99, 20010), (110, 18009), (115, 17226), (135, 14674), (138, 14355), (145, 13662), (165, 12006), (174, 11385), (198, 10005), (207, 9570), (230, 8613), (253, 7830), (261, 7590), (270, 7337), (290, 6831), (297, 6670), (319, 6210), (330, 6003), (345, 5742), (414, 4785), (435, 4554), (495, 4002), (506, 3915), (522, 3795), (594, 3335), (621, 3190), (638, 3105), (667, 2970), (690, 2871), (759, 2610), (783, 2530), (870, 2277), (957, 2070), (990, 2001), (1035, 1914), (1242, 1595), (1265, 1566), (1305, 1518), (1334, 1485)]