18121220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{69697}}^1$

素因数の和:69719

約数の個数: 24

約数和(自身を含む): 40982424

約数和(自身を除く): 22861204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 69697, 139394, 278788, 348485, 696970, 906061, 1393940, 1812122, 3624244, 4530305, 9060610, 18121220]

約数ペア:

[(1, 18121220), (2, 9060610), (4, 4530305), (5, 3624244), (10, 1812122), (13, 1393940), (20, 906061), (26, 696970), (52, 348485), (65, 278788), (130, 139394), (260, 69697)]