8988020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 19707408

約数和(自身を除く): 10719388

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 113, 164, 194, 205, 226, 388, 410, 452, 485, 565, 820, 970, 1130, 1940, 2260, 3977, 4633, 7954, 9266, 10961, 15908, 18532, 19885, 21922, 23165, 39770, 43844, 46330, 54805, 79540, 92660, 109610, 219220, 449401, 898802, 1797604, 2247005, 4494010, 8988020]

約数ペア:

[(1, 8988020), (2, 4494010), (4, 2247005), (5, 1797604), (10, 898802), (20, 449401), (41, 219220), (82, 109610), (97, 92660), (113, 79540), (164, 54805), (194, 46330), (205, 43844), (226, 39770), (388, 23165), (410, 21922), (452, 19885), (485, 18532), (565, 15908), (820, 10961), (970, 9266), (1130, 7954), (1940, 4633), (2260, 3977)]