18164920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 42768000

約数和(自身を除く): 24603080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 59, 86, 118, 172, 179, 215, 236, 295, 344, 358, 430, 472, 590, 716, 860, 895, 1180, 1432, 1720, 1790, 2360, 2537, 3580, 5074, 7160, 7697, 10148, 10561, 12685, 15394, 20296, 21122, 25370, 30788, 38485, 42244, 50740, 52805, 61576, 76970, 84488, 101480, 105610, 153940, 211220, 307880, 422440, 454123, 908246, 1816492, 2270615, 3632984, 4541230, 9082460, 18164920]

約数ペア:

[(1, 18164920), (2, 9082460), (4, 4541230), (5, 3632984), (8, 2270615), (10, 1816492), (20, 908246), (40, 454123), (43, 422440), (59, 307880), (86, 211220), (118, 153940), (172, 105610), (179, 101480), (215, 84488), (236, 76970), (295, 61576), (344, 52805), (358, 50740), (430, 42244), (472, 38485), (590, 30788), (716, 25370), (860, 21122), (895, 20296), (1180, 15394), (1432, 12685), (1720, 10561), (1790, 10148), (2360, 7697), (2537, 7160), (3580, 5074)]