205167280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{881}}^1$

素因数の和:1006

約数の個数: 80

約数和(自身を含む): 496093248

約数和(自身を除く): 290925968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 71, 80, 82, 142, 164, 205, 284, 328, 355, 410, 568, 656, 710, 820, 881, 1136, 1420, 1640, 1762, 2840, 2911, 3280, 3524, 4405, 5680, 5822, 7048, 8810, 11644, 14096, 14555, 17620, 23288, 29110, 35240, 36121, 46576, 58220, 62551, 70480, 72242, 116440, 125102, 144484, 180605, 232880, 250204, 288968, 312755, 361210, 500408, 577936, 625510, 722420, 1000816, 1251020, 1444840, 2502040, 2564591, 2889680, 5004080, 5129182, 10258364, 12822955, 20516728, 25645910, 41033456, 51291820, 102583640, 205167280]

約数ペア:

[(1, 205167280), (2, 102583640), (4, 51291820), (5, 41033456), (8, 25645910), (10, 20516728), (16, 12822955), (20, 10258364), (40, 5129182), (41, 5004080), (71, 2889680), (80, 2564591), (82, 2502040), (142, 1444840), (164, 1251020), (205, 1000816), (284, 722420), (328, 625510), (355, 577936), (410, 500408), (568, 361210), (656, 312755), (710, 288968), (820, 250204), (881, 232880), (1136, 180605), (1420, 144484), (1640, 125102), (1762, 116440), (2840, 72242), (2911, 70480), (3280, 62551), (3524, 58220), (4405, 46576), (5680, 36121), (5822, 35240), (7048, 29110), (8810, 23288), (11644, 17620), (14096, 14555)]