21811478

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{1373}}^1$

素因数の和:1448

約数の個数: 24

約数和(自身を含む): 36207648

約数和(自身を除く): 14396170

約数列:

[1, 2, 13, 26, 47, 94, 169, 338, 611, 1222, 1373, 2746, 7943, 15886, 17849, 35698, 64531, 129062, 232037, 464074, 838903, 1677806, 10905739, 21811478]

約数ペア:

[(1, 21811478), (2, 10905739), (13, 1677806), (26, 838903), (47, 464074), (94, 232037), (169, 129062), (338, 64531), (611, 35698), (1222, 17849), (1373, 15886), (2746, 7943)]