20820980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{45263}}^1$

素因数の和:45295

約数の個数: 24

約数和(自身を含む): 45626112

約数和(自身を除く): 24805132

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 45263, 90526, 181052, 226315, 452630, 905260, 1041049, 2082098, 4164196, 5205245, 10410490, 20820980]

約数ペア:

[(1, 20820980), (2, 10410490), (4, 5205245), (5, 4164196), (10, 2082098), (20, 1041049), (23, 905260), (46, 452630), (92, 226315), (115, 181052), (230, 90526), (460, 45263)]