21731972

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{1063}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 40219200

約数和(自身を除く): 18487228

約数列:

[1, 2, 4, 19, 38, 76, 269, 538, 1063, 1076, 2126, 4252, 5111, 10222, 20197, 20444, 40394, 80788, 285947, 571894, 1143788, 5432993, 10865986, 21731972]

約数ペア:

[(1, 21731972), (2, 10865986), (4, 5432993), (19, 1143788), (38, 571894), (76, 285947), (269, 80788), (538, 40394), (1063, 20444), (1076, 20197), (2126, 10222), (4252, 5111)]