20649255

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{367}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 37588992

約数和(自身を除く): 16939737

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 121, 155, 165, 341, 363, 367, 465, 605, 1023, 1101, 1705, 1815, 1835, 3751, 4037, 5115, 5505, 11253, 11377, 12111, 18755, 20185, 34131, 44407, 56265, 56885, 60555, 125147, 133221, 170655, 222035, 375441, 625735, 666105, 1376617, 1877205, 4129851, 6883085, 20649255]

約数ペア:

[(1, 20649255), (3, 6883085), (5, 4129851), (11, 1877205), (15, 1376617), (31, 666105), (33, 625735), (55, 375441), (93, 222035), (121, 170655), (155, 133221), (165, 125147), (341, 60555), (363, 56885), (367, 56265), (465, 44407), (605, 34131), (1023, 20185), (1101, 18755), (1705, 12111), (1815, 11377), (1835, 11253), (3751, 5505), (4037, 5115)]