20348660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{617}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 45786384

約数和(自身を除く): 25437724

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 97, 170, 194, 340, 388, 485, 617, 970, 1234, 1649, 1940, 2468, 3085, 3298, 6170, 6596, 8245, 10489, 12340, 16490, 20978, 32980, 41956, 52445, 59849, 104890, 119698, 209780, 239396, 299245, 598490, 1017433, 1196980, 2034866, 4069732, 5087165, 10174330, 20348660]

約数ペア:

[(1, 20348660), (2, 10174330), (4, 5087165), (5, 4069732), (10, 2034866), (17, 1196980), (20, 1017433), (34, 598490), (68, 299245), (85, 239396), (97, 209780), (170, 119698), (194, 104890), (340, 59849), (388, 52445), (485, 41956), (617, 32980), (970, 20978), (1234, 16490), (1649, 12340), (1940, 10489), (2468, 8245), (3085, 6596), (3298, 6170)]