20778224

素因数分解:

$2^4\times {\mathrm{1109}}^1\times {\mathrm{1171}}^1$

素因数の和:2288

約数の個数: 20

約数和(自身を含む): 40328520

約数和(自身を除く): 19550296

約数列:

[1, 2, 4, 8, 16, 1109, 1171, 2218, 2342, 4436, 4684, 8872, 9368, 17744, 18736, 1298639, 2597278, 5194556, 10389112, 20778224]

約数ペア:

[(1, 20778224), (2, 10389112), (4, 5194556), (8, 2597278), (16, 1298639), (1109, 18736), (1171, 17744), (2218, 9368), (2342, 8872), (4436, 4684)]