81191560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2273}}^1$

素因数の和:2350

約数の個数: 64

約数和(自身を含む): 196473600

約数和(自身を除く): 115282040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 760, 893, 940, 1786, 1880, 2273, 3572, 4465, 4546, 7144, 8930, 9092, 11365, 17860, 18184, 22730, 35720, 43187, 45460, 86374, 90920, 106831, 172748, 213662, 215935, 345496, 427324, 431870, 534155, 854648, 863740, 1068310, 1727480, 2029789, 2136620, 4059578, 4273240, 8119156, 10148945, 16238312, 20297890, 40595780, 81191560]

約数ペア:

[(1, 81191560), (2, 40595780), (4, 20297890), (5, 16238312), (8, 10148945), (10, 8119156), (19, 4273240), (20, 4059578), (38, 2136620), (40, 2029789), (47, 1727480), (76, 1068310), (94, 863740), (95, 854648), (152, 534155), (188, 431870), (190, 427324), (235, 345496), (376, 215935), (380, 213662), (470, 172748), (760, 106831), (893, 90920), (940, 86374), (1786, 45460), (1880, 43187), (2273, 35720), (3572, 22730), (4465, 18184), (4546, 17860), (7144, 11365), (8930, 9092)]