20961572

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{367}}^1$

素因数の和:611

約数の個数: 24

約数和(自身を含む): 37403520

約数和(自身を除く): 16441948

約数列:

[1, 2, 4, 109, 131, 218, 262, 367, 436, 524, 734, 1468, 14279, 28558, 40003, 48077, 57116, 80006, 96154, 160012, 192308, 5240393, 10480786, 20961572]

約数ペア:

[(1, 20961572), (2, 10480786), (4, 5240393), (109, 192308), (131, 160012), (218, 96154), (262, 80006), (367, 57116), (436, 48077), (524, 40003), (734, 28558), (1468, 14279)]