21755380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57251}}^1$

素因数の和:57279

約数の個数: 24

約数和(自身を含む): 48091680

約数和(自身を除く): 26336300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57251, 114502, 229004, 286255, 572510, 1087769, 1145020, 2175538, 4351076, 5438845, 10877690, 21755380]

約数ペア:

[(1, 21755380), (2, 10877690), (4, 5438845), (5, 4351076), (10, 2175538), (19, 1145020), (20, 1087769), (38, 572510), (76, 286255), (95, 229004), (190, 114502), (380, 57251)]