20921776

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42181}}^1$

素因数の和:42220

約数の個数: 20

約数和(自身を含む): 41844544

約数和(自身を除く): 20922768

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42181, 84362, 168724, 337448, 674896, 1307611, 2615222, 5230444, 10460888, 20921776]

約数ペア:

[(1, 20921776), (2, 10460888), (4, 5230444), (8, 2615222), (16, 1307611), (31, 674896), (62, 337448), (124, 168724), (248, 84362), (496, 42181)]