20921774

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{1373}}^1$

素因数の和:1795

約数の個数: 16

約数和(自身を含む): 33140880

約数和(自身を除く): 12219106

約数列:

[1, 2, 19, 38, 401, 802, 1373, 2746, 7619, 15238, 26087, 52174, 550573, 1101146, 10460887, 20921774]

約数ペア:

[(1, 20921774), (2, 10460887), (19, 1101146), (38, 550573), (401, 52174), (802, 26087), (1373, 15238), (2746, 7619)]