21915664

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{72091}}^1$

素因数の和:72118

約数の個数: 20

約数和(自身を含む): 44697040

約数和(自身を除く): 22781376

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 72091, 144182, 288364, 576728, 1153456, 1369729, 2739458, 5478916, 10957832, 21915664]

約数ペア:

[(1, 21915664), (2, 10957832), (4, 5478916), (8, 2739458), (16, 1369729), (19, 1153456), (38, 576728), (76, 288364), (152, 144182), (304, 72091)]