20940621

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 30603456

約数和(自身を除く): 9662835

約数列:

[1, 3, 13, 39, 103, 169, 309, 401, 507, 1203, 1339, 4017, 5213, 15639, 17407, 41303, 52221, 67769, 123909, 203307, 536939, 1610817, 6980207, 20940621]

約数ペア:

[(1, 20940621), (3, 6980207), (13, 1610817), (39, 536939), (103, 203307), (169, 123909), (309, 67769), (401, 52221), (507, 41303), (1203, 17407), (1339, 15639), (4017, 5213)]