21381739225

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1586771}}^1$

素因数の和:1586806

約数の個数: 36

約数和(自身を含む): 33645913488

約数和(自身を除く): 12264174263

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 175, 245, 275, 385, 539, 1225, 1925, 2695, 13475, 1586771, 7933855, 11107397, 17454481, 39669275, 55536985, 77751779, 87272405, 122181367, 277684925, 388758895, 436362025, 610906835, 855269569, 1943794475, 3054534175, 4276347845, 21381739225]

約数ペア:

[(1, 21381739225), (5, 4276347845), (7, 3054534175), (11, 1943794475), (25, 855269569), (35, 610906835), (49, 436362025), (55, 388758895), (77, 277684925), (175, 122181367), (245, 87272405), (275, 77751779), (385, 55536985), (539, 39669275), (1225, 17454481), (1925, 11107397), (2695, 7933855), (13475, 1586771)]