20821141

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 25878528

約数和(自身を除く): 5057387

約数列:

[1, 11, 17, 23, 47, 103, 187, 253, 391, 517, 799, 1081, 1133, 1751, 2369, 4301, 4841, 8789, 11891, 18377, 19261, 26059, 40273, 53251, 82297, 111343, 202147, 443003, 905267, 1224773, 1892831, 20821141]

約数ペア:

[(1, 20821141), (11, 1892831), (17, 1224773), (23, 905267), (47, 443003), (103, 202147), (187, 111343), (253, 82297), (391, 53251), (517, 40273), (799, 26059), (1081, 19261), (1133, 18377), (1751, 11891), (2369, 8789), (4301, 4841)]