20718412

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1249}}^1$

素因数の和:1306

約数の個数: 48

約数和(自身を含む): 44100000

約数和(自身を除く): 23381588

約数列:

[1, 2, 4, 11, 13, 22, 26, 29, 44, 52, 58, 116, 143, 286, 319, 377, 572, 638, 754, 1249, 1276, 1508, 2498, 4147, 4996, 8294, 13739, 16237, 16588, 27478, 32474, 36221, 54956, 64948, 72442, 144884, 178607, 357214, 398431, 470873, 714428, 796862, 941746, 1593724, 1883492, 5179603, 10359206, 20718412]

約数ペア:

[(1, 20718412), (2, 10359206), (4, 5179603), (11, 1883492), (13, 1593724), (22, 941746), (26, 796862), (29, 714428), (44, 470873), (52, 398431), (58, 357214), (116, 178607), (143, 144884), (286, 72442), (319, 64948), (377, 54956), (572, 36221), (638, 32474), (754, 27478), (1249, 16588), (1276, 16237), (1508, 13739), (2498, 8294), (4147, 4996)]