18015880

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{977}}^1$

素因数の和:1449

約数の個数: 32

約数和(自身を含む): 40665240

約数和(自身を除く): 22649360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 977, 1844, 1954, 2305, 3688, 3908, 4610, 4885, 7816, 9220, 9770, 18440, 19540, 39080, 450397, 900794, 1801588, 2251985, 3603176, 4503970, 9007940, 18015880]

約数ペア:

[(1, 18015880), (2, 9007940), (4, 4503970), (5, 3603176), (8, 2251985), (10, 1801588), (20, 900794), (40, 450397), (461, 39080), (922, 19540), (977, 18440), (1844, 9770), (1954, 9220), (2305, 7816), (3688, 4885), (3908, 4610)]