20506785

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1021}}^1$

素因数の和:1145

約数の個数: 32

約数和(自身を含む): 35712768

約数和(自身を除く): 15205983

約数列:

[1, 3, 5, 13, 15, 39, 65, 103, 195, 309, 515, 1021, 1339, 1545, 3063, 4017, 5105, 6695, 13273, 15315, 20085, 39819, 66365, 105163, 199095, 315489, 525815, 1367119, 1577445, 4101357, 6835595, 20506785]

約数ペア:

[(1, 20506785), (3, 6835595), (5, 4101357), (13, 1577445), (15, 1367119), (39, 525815), (65, 315489), (103, 199095), (195, 105163), (309, 66365), (515, 39819), (1021, 20085), (1339, 15315), (1545, 13273), (3063, 6695), (4017, 5105)]