20040825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{647}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 38568960

約数和(自身を除く): 18528135

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 59, 75, 105, 175, 177, 295, 413, 525, 647, 885, 1239, 1475, 1941, 2065, 3235, 4425, 4529, 6195, 9705, 10325, 13587, 16175, 22645, 30975, 38173, 48525, 67935, 113225, 114519, 190865, 267211, 339675, 572595, 801633, 954325, 1336055, 2862975, 4008165, 6680275, 20040825]

約数ペア:

[(1, 20040825), (3, 6680275), (5, 4008165), (7, 2862975), (15, 1336055), (21, 954325), (25, 801633), (35, 572595), (59, 339675), (75, 267211), (105, 190865), (175, 114519), (177, 113225), (295, 67935), (413, 48525), (525, 38173), (647, 30975), (885, 22645), (1239, 16175), (1475, 13587), (1941, 10325), (2065, 9705), (3235, 6195), (4425, 4529)]