20787867

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:368

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 11468133

約数列:

[1, 3, 9, 27, 29, 87, 139, 191, 261, 417, 573, 783, 1251, 1719, 3753, 4031, 5157, 5539, 12093, 16617, 26549, 36279, 49851, 79647, 108837, 149553, 238941, 716823, 769921, 2309763, 6929289, 20787867]

約数ペア:

[(1, 20787867), (3, 6929289), (9, 2309763), (27, 769921), (29, 716823), (87, 238941), (139, 149553), (191, 108837), (261, 79647), (417, 49851), (573, 36279), (783, 26549), (1251, 16617), (1719, 12093), (3753, 5539), (4031, 5157)]