17881980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:323

約数の個数: 96

約数和(自身を含む): 53222400

約数和(自身を除く): 35340420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 43, 58, 60, 86, 87, 116, 129, 145, 172, 174, 215, 239, 258, 290, 348, 430, 435, 478, 516, 580, 645, 717, 860, 870, 956, 1195, 1247, 1290, 1434, 1740, 2390, 2494, 2580, 2868, 3585, 3741, 4780, 4988, 6235, 6931, 7170, 7482, 10277, 12470, 13862, 14340, 14964, 18705, 20554, 20793, 24940, 27724, 30831, 34655, 37410, 41108, 41586, 51385, 61662, 69310, 74820, 83172, 102770, 103965, 123324, 138620, 154155, 205540, 207930, 298033, 308310, 415860, 596066, 616620, 894099, 1192132, 1490165, 1788198, 2980330, 3576396, 4470495, 5960660, 8940990, 17881980]

約数ペア:

[(1, 17881980), (2, 8940990), (3, 5960660), (4, 4470495), (5, 3576396), (6, 2980330), (10, 1788198), (12, 1490165), (15, 1192132), (20, 894099), (29, 616620), (30, 596066), (43, 415860), (58, 308310), (60, 298033), (86, 207930), (87, 205540), (116, 154155), (129, 138620), (145, 123324), (172, 103965), (174, 102770), (215, 83172), (239, 74820), (258, 69310), (290, 61662), (348, 51385), (430, 41586), (435, 41108), (478, 37410), (516, 34655), (580, 30831), (645, 27724), (717, 24940), (860, 20793), (870, 20554), (956, 18705), (1195, 14964), (1247, 14340), (1290, 13862), (1434, 12470), (1740, 10277), (2390, 7482), (2494, 7170), (2580, 6931), (2868, 6235), (3585, 4988), (3741, 4780)]