20902310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:389

約数の個数: 64

約数和(自身を含む): 45287424

約数和(自身を除く): 24385114

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 47, 55, 65, 94, 110, 130, 143, 235, 286, 311, 470, 517, 611, 622, 715, 1034, 1222, 1430, 1555, 2585, 3055, 3110, 3421, 4043, 5170, 6110, 6721, 6842, 8086, 13442, 14617, 17105, 20215, 29234, 33605, 34210, 40430, 44473, 67210, 73085, 88946, 146170, 160787, 190021, 222365, 321574, 380042, 444730, 803935, 950105, 1607870, 1900210, 2090231, 4180462, 10451155, 20902310]

約数ペア:

[(1, 20902310), (2, 10451155), (5, 4180462), (10, 2090231), (11, 1900210), (13, 1607870), (22, 950105), (26, 803935), (47, 444730), (55, 380042), (65, 321574), (94, 222365), (110, 190021), (130, 160787), (143, 146170), (235, 88946), (286, 73085), (311, 67210), (470, 44473), (517, 40430), (611, 34210), (622, 33605), (715, 29234), (1034, 20215), (1222, 17105), (1430, 14617), (1555, 13442), (2585, 8086), (3055, 6842), (3110, 6721), (3421, 6110), (4043, 5170)]