21000948997

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7672981}}^1$

素因数の和:7673028

約数の個数: 16

約数和(自身を含む): 26517825792

約数和(自身を除く): 5516876795

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7672981, 53710867, 130440677, 176478563, 913084739, 1235349941, 3000135571, 21000948997]

約数ペア:

[(1, 21000948997), (7, 3000135571), (17, 1235349941), (23, 913084739), (119, 176478563), (161, 130440677), (391, 53710867), (2737, 7672981)]