21468784

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70621}}^1$

素因数の和:70648

約数の個数: 20

約数和(自身を含む): 43785640

約数和(自身を除く): 22316856

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70621, 141242, 282484, 564968, 1129936, 1341799, 2683598, 5367196, 10734392, 21468784]

約数ペア:

[(1, 21468784), (2, 10734392), (4, 5367196), (8, 2683598), (16, 1341799), (19, 1129936), (38, 564968), (76, 282484), (152, 141242), (304, 70621)]