20840248

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18217}}^1$

素因数の和:18247

約数の個数: 32

約数和(自身を含む): 45909360

約数和(自身を除く): 25069112

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18217, 36434, 72868, 145736, 200387, 236821, 400774, 473642, 801548, 947284, 1603096, 1894568, 2605031, 5210062, 10420124, 20840248]

約数ペア:

[(1, 20840248), (2, 10420124), (4, 5210062), (8, 2605031), (11, 1894568), (13, 1603096), (22, 947284), (26, 801548), (44, 473642), (52, 400774), (88, 236821), (104, 200387), (143, 145736), (286, 72868), (572, 36434), (1144, 18217)]