21885872

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71993}}^1$

素因数の和:72020

約数の個数: 20

約数和(自身を含む): 44636280

約数和(自身を除く): 22750408

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71993, 143986, 287972, 575944, 1151888, 1367867, 2735734, 5471468, 10942936, 21885872]

約数ペア:

[(1, 21885872), (2, 10942936), (4, 5471468), (8, 2735734), (16, 1367867), (19, 1151888), (38, 575944), (76, 287972), (152, 143986), (304, 71993)]