18459820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15131}}^1$

素因数の和:15201

約数の個数: 24

約数和(自身を含む): 39403728

約数和(自身を除く): 20943908

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15131, 30262, 60524, 75655, 151310, 302620, 922991, 1845982, 3691964, 4614955, 9229910, 18459820]

約数ペア:

[(1, 18459820), (2, 9229910), (4, 4614955), (5, 3691964), (10, 1845982), (20, 922991), (61, 302620), (122, 151310), (244, 75655), (305, 60524), (610, 30262), (1220, 15131)]