18161825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{313}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 24763296

約数和(自身を除く): 6601471

約数列:

[1, 5, 11, 25, 55, 211, 275, 313, 1055, 1565, 2321, 3443, 5275, 7825, 11605, 17215, 58025, 66043, 86075, 330215, 726473, 1651075, 3632365, 18161825]

約数ペア:

[(1, 18161825), (5, 3632365), (11, 1651075), (25, 726473), (55, 330215), (211, 86075), (275, 66043), (313, 58025), (1055, 17215), (1565, 11605), (2321, 7825), (3443, 5275)]