20538020

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4261}}^1$

素因数の和:4511

約数の個数: 24

約数和(自身を含む): 43318968

約数和(自身を除く): 22780948

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4261, 4820, 8522, 17044, 21305, 42610, 85220, 1026901, 2053802, 4107604, 5134505, 10269010, 20538020]

約数ペア:

[(1, 20538020), (2, 10269010), (4, 5134505), (5, 4107604), (10, 2053802), (20, 1026901), (241, 85220), (482, 42610), (964, 21305), (1205, 17044), (2410, 8522), (4261, 4820)]