21978136

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{144593}}^1$

素因数の和:144618

約数の個数: 16

約数和(自身を含む): 43378200

約数和(自身を除く): 21400064

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 144593, 289186, 578372, 1156744, 2747267, 5494534, 10989068, 21978136]

約数ペア:

[(1, 21978136), (2, 10989068), (4, 5494534), (8, 2747267), (19, 1156744), (38, 578372), (76, 289186), (152, 144593)]