20223581

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:249

約数の個数: 24

約数和(自身を含む): 25017984

約数和(自身を除く): 4794403

約数列:

[1, 7, 19, 53, 133, 151, 361, 371, 1007, 1057, 2527, 2869, 7049, 8003, 19133, 20083, 54511, 56021, 133931, 152057, 381577, 1064399, 2889083, 20223581]

約数ペア:

[(1, 20223581), (7, 2889083), (19, 1064399), (53, 381577), (133, 152057), (151, 133931), (361, 56021), (371, 54511), (1007, 20083), (1057, 19133), (2527, 8003), (2869, 7049)]