81767880

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{25237}}^1$

素因数の和:25260

約数の個数: 80

約数和(自身を含む): 274841820

約数和(自身を除く): 193073940

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 25237, 50474, 75711, 100948, 126185, 151422, 201896, 227133, 252370, 302844, 378555, 454266, 504740, 605688, 681399, 757110, 908532, 1009480, 1135665, 1362798, 1514220, 1817064, 2044197, 2271330, 2725596, 3028440, 3406995, 4088394, 4542660, 5451192, 6813990, 8176788, 9085320, 10220985, 13627980, 16353576, 20441970, 27255960, 40883940, 81767880]

約数ペア:

[(1, 81767880), (2, 40883940), (3, 27255960), (4, 20441970), (5, 16353576), (6, 13627980), (8, 10220985), (9, 9085320), (10, 8176788), (12, 6813990), (15, 5451192), (18, 4542660), (20, 4088394), (24, 3406995), (27, 3028440), (30, 2725596), (36, 2271330), (40, 2044197), (45, 1817064), (54, 1514220), (60, 1362798), (72, 1135665), (81, 1009480), (90, 908532), (108, 757110), (120, 681399), (135, 605688), (162, 504740), (180, 454266), (216, 378555), (270, 302844), (324, 252370), (360, 227133), (405, 201896), (540, 151422), (648, 126185), (810, 100948), (1080, 75711), (1620, 50474), (3240, 25237)]