18218440

素因数分解:

$2^3\times 5^1\times {\mathrm{455461}}^1$

素因数の和:455472

約数の個数: 16

約数和(自身を含む): 40991580

約数和(自身を除く): 22773140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 455461, 910922, 1821844, 2277305, 3643688, 4554610, 9109220, 18218440]

約数ペア:

[(1, 18218440), (2, 9109220), (4, 4554610), (5, 3643688), (8, 2277305), (10, 1821844), (20, 910922), (40, 455461)]