20811944

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{1117}}^1$

素因数の和:1277

約数の個数: 32

約数和(自身を含む): 41656680

約数和(自身を除く): 20844736

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 137, 274, 548, 1096, 1117, 2234, 2329, 4468, 4658, 8936, 9316, 18632, 18989, 37978, 75956, 151912, 153029, 306058, 612116, 1224232, 2601493, 5202986, 10405972, 20811944]

約数ペア:

[(1, 20811944), (2, 10405972), (4, 5202986), (8, 2601493), (17, 1224232), (34, 612116), (68, 306058), (136, 153029), (137, 151912), (274, 75956), (548, 37978), (1096, 18989), (1117, 18632), (2234, 9316), (2329, 8936), (4468, 4658)]