209945744

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{690611}}^1$

素因数の和:690638

約数の個数: 20

約数和(自身を含む): 428179440

約数和(自身を除く): 218233696

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 690611, 1381222, 2762444, 5524888, 11049776, 13121609, 26243218, 52486436, 104972872, 209945744]

約数ペア:

[(1, 209945744), (2, 104972872), (4, 52486436), (8, 26243218), (16, 13121609), (19, 11049776), (38, 5524888), (76, 2762444), (152, 1381222), (304, 690611)]