21395824

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70381}}^1$

素因数の和:70408

約数の個数: 20

約数和(自身を含む): 43636840

約数和(自身を除く): 22241016

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70381, 140762, 281524, 563048, 1126096, 1337239, 2674478, 5348956, 10697912, 21395824]

約数ペア:

[(1, 21395824), (2, 10697912), (4, 5348956), (8, 2674478), (16, 1337239), (19, 1126096), (38, 563048), (76, 281524), (152, 140762), (304, 70381)]