20857744

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{68611}}^1$

素因数の和:68638

約数の個数: 20

約数和(自身を含む): 42539440

約数和(自身を除く): 21681696

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 68611, 137222, 274444, 548888, 1097776, 1303609, 2607218, 5214436, 10428872, 20857744]

約数ペア:

[(1, 20857744), (2, 10428872), (4, 5214436), (8, 2607218), (16, 1303609), (19, 1097776), (38, 548888), (76, 274444), (152, 137222), (304, 68611)]