20115010

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{691}}^1$

素因数の和:810

約数の個数: 32

約数和(自身を含む): 37666944

約数和(自身を除く): 17551934

約数列:

[1, 2, 5, 10, 41, 71, 82, 142, 205, 355, 410, 691, 710, 1382, 2911, 3455, 5822, 6910, 14555, 28331, 29110, 49061, 56662, 98122, 141655, 245305, 283310, 490610, 2011501, 4023002, 10057505, 20115010]

約数ペア:

[(1, 20115010), (2, 10057505), (5, 4023002), (10, 2011501), (41, 490610), (71, 283310), (82, 245305), (142, 141655), (205, 98122), (355, 56662), (410, 49061), (691, 29110), (710, 28331), (1382, 14555), (2911, 6910), (3455, 5822)]