38541640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 90357120

約数和(自身を除く): 51815480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 71, 82, 142, 164, 205, 284, 328, 331, 355, 410, 568, 662, 710, 820, 1324, 1420, 1640, 1655, 2648, 2840, 2911, 3310, 5822, 6620, 11644, 13240, 13571, 14555, 23288, 23501, 27142, 29110, 47002, 54284, 58220, 67855, 94004, 108568, 116440, 117505, 135710, 188008, 235010, 271420, 470020, 542840, 940040, 963541, 1927082, 3854164, 4817705, 7708328, 9635410, 19270820, 38541640]

約数ペア:

[(1, 38541640), (2, 19270820), (4, 9635410), (5, 7708328), (8, 4817705), (10, 3854164), (20, 1927082), (40, 963541), (41, 940040), (71, 542840), (82, 470020), (142, 271420), (164, 235010), (205, 188008), (284, 135710), (328, 117505), (331, 116440), (355, 108568), (410, 94004), (568, 67855), (662, 58220), (710, 54284), (820, 47002), (1324, 29110), (1420, 27142), (1640, 23501), (1655, 23288), (2648, 14555), (2840, 13571), (2911, 13240), (3310, 11644), (5822, 6620)]