28261805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{47}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 42142464

約数和(自身を除く): 13880659

約数列:

[1, 5, 11, 13, 29, 47, 55, 65, 143, 145, 235, 319, 377, 517, 611, 715, 841, 1363, 1595, 1885, 2585, 3055, 4147, 4205, 6721, 6815, 9251, 10933, 14993, 17719, 20735, 33605, 39527, 46255, 54665, 74965, 88595, 120263, 194909, 197635, 434797, 513851, 601315, 974545, 2173985, 2569255, 5652361, 28261805]

約数ペア:

[(1, 28261805), (5, 5652361), (11, 2569255), (13, 2173985), (29, 974545), (47, 601315), (55, 513851), (65, 434797), (143, 197635), (145, 194909), (235, 120263), (319, 88595), (377, 74965), (517, 54665), (611, 46255), (715, 39527), (841, 33605), (1363, 20735), (1595, 17719), (1885, 14993), (2585, 10933), (3055, 9251), (4147, 6815), (4205, 6721)]