18187240

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2003}}^1$

素因数の和:2241

約数の個数: 32

約数和(自身を含む): 41122080

約数和(自身を除く): 22934840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2003, 2270, 4006, 4540, 8012, 9080, 10015, 16024, 20030, 40060, 80120, 454681, 909362, 1818724, 2273405, 3637448, 4546810, 9093620, 18187240]

約数ペア:

[(1, 18187240), (2, 9093620), (4, 4546810), (5, 3637448), (8, 2273405), (10, 1818724), (20, 909362), (40, 454681), (227, 80120), (454, 40060), (908, 20030), (1135, 16024), (1816, 10015), (2003, 9080), (2270, 8012), (4006, 4540)]