21747310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1277}}^1$

素因数の和:1428

約数の個数: 32

約数和(自身を含む): 42511392

約数和(自身を除く): 20764082

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 262, 655, 1277, 1310, 1703, 2554, 3406, 6385, 8515, 12770, 16601, 17030, 33202, 83005, 166010, 167287, 334574, 836435, 1672870, 2174731, 4349462, 10873655, 21747310]

約数ペア:

[(1, 21747310), (2, 10873655), (5, 4349462), (10, 2174731), (13, 1672870), (26, 836435), (65, 334574), (130, 167287), (131, 166010), (262, 83005), (655, 33202), (1277, 17030), (1310, 16601), (1703, 12770), (2554, 8515), (3406, 6385)]