20553393

素因数分解:

$3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1571}}^1$

素因数の和:1677

約数の個数: 24

約数和(自身を含む): 32257440

約数和(自身を除く): 11704047

約数列:

[1, 3, 7, 21, 49, 89, 147, 267, 623, 1571, 1869, 4361, 4713, 10997, 13083, 32991, 76979, 139819, 230937, 419457, 978733, 2936199, 6851131, 20553393]

約数ペア:

[(1, 20553393), (3, 6851131), (7, 2936199), (21, 978733), (49, 419457), (89, 230937), (147, 139819), (267, 76979), (623, 32991), (1571, 13083), (1869, 10997), (4361, 4713)]