21989124860

素因数分解:

$2^2\times 5^1\times {\mathrm{30881}}^1\times {\mathrm{35603}}^1$

素因数の和:66493

約数の個数: 24

約数和(自身を含む): 46179954576

約数和(自身を除く): 24190829716

約数列:

[1, 2, 4, 5, 10, 20, 30881, 35603, 61762, 71206, 123524, 142412, 154405, 178015, 308810, 356030, 617620, 712060, 1099456243, 2198912486, 4397824972, 5497281215, 10994562430, 21989124860]

約数ペア:

[(1, 21989124860), (2, 10994562430), (4, 5497281215), (5, 4397824972), (10, 2198912486), (20, 1099456243), (30881, 712060), (35603, 617620), (61762, 356030), (71206, 308810), (123524, 178015), (142412, 154405)]