17968840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 42831360

約数和(自身を除く): 24862520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 337, 344, 430, 620, 674, 860, 1240, 1333, 1348, 1685, 1720, 2666, 2696, 3370, 5332, 6665, 6740, 10447, 10664, 13330, 13480, 14491, 20894, 26660, 28982, 41788, 52235, 53320, 57964, 72455, 83576, 104470, 115928, 144910, 208940, 289820, 417880, 449221, 579640, 898442, 1796884, 2246105, 3593768, 4492210, 8984420, 17968840]

約数ペア:

[(1, 17968840), (2, 8984420), (4, 4492210), (5, 3593768), (8, 2246105), (10, 1796884), (20, 898442), (31, 579640), (40, 449221), (43, 417880), (62, 289820), (86, 208940), (124, 144910), (155, 115928), (172, 104470), (215, 83576), (248, 72455), (310, 57964), (337, 53320), (344, 52235), (430, 41788), (620, 28982), (674, 26660), (860, 20894), (1240, 14491), (1333, 13480), (1348, 13330), (1685, 10664), (1720, 10447), (2666, 6740), (2696, 6665), (3370, 5332)]