18821565

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2213}}^1$

素因数の和:2240

約数の個数: 48

約数和(自身を含む): 38683008

約数和(自身を除く): 19861443

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2213, 2835, 6639, 8505, 11065, 15491, 19917, 33195, 46473, 59751, 77455, 99585, 139419, 179253, 232365, 298755, 418257, 537759, 697095, 896265, 1254771, 2091285, 2688795, 3764313, 6273855, 18821565]

約数ペア:

[(1, 18821565), (3, 6273855), (5, 3764313), (7, 2688795), (9, 2091285), (15, 1254771), (21, 896265), (27, 697095), (35, 537759), (45, 418257), (63, 298755), (81, 232365), (105, 179253), (135, 139419), (189, 99585), (243, 77455), (315, 59751), (405, 46473), (567, 33195), (945, 19917), (1215, 15491), (1701, 11065), (2213, 8505), (2835, 6639)]