218365640

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{30161}}^1$

素因数の和:30353

約数の個数: 32

約数和(自身を含む): 494053560

約数和(自身を除く): 275687920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 30161, 60322, 120644, 150805, 241288, 301610, 603220, 1206440, 5459141, 10918282, 21836564, 27295705, 43673128, 54591410, 109182820, 218365640]

約数ペア:

[(1, 218365640), (2, 109182820), (4, 54591410), (5, 43673128), (8, 27295705), (10, 21836564), (20, 10918282), (40, 5459141), (181, 1206440), (362, 603220), (724, 301610), (905, 241288), (1448, 150805), (1810, 120644), (3620, 60322), (7240, 30161)]