21798928

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71707}}^1$

素因数の和:71734

約数の個数: 20

約数和(自身を含む): 44458960

約数和(自身を除く): 22660032

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71707, 143414, 286828, 573656, 1147312, 1362433, 2724866, 5449732, 10899464, 21798928]

約数ペア:

[(1, 21798928), (2, 10899464), (4, 5449732), (8, 2724866), (16, 1362433), (19, 1147312), (38, 573656), (76, 286828), (152, 143414), (304, 71707)]