21880856

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{143953}}^1$

素因数の和:143978

約数の個数: 16

約数和(自身を含む): 43186200

約数和(自身を除く): 21305344

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 143953, 287906, 575812, 1151624, 2735107, 5470214, 10940428, 21880856]

約数ペア:

[(1, 21880856), (2, 10940428), (4, 5470214), (8, 2735107), (19, 1151624), (38, 575812), (76, 287906), (152, 143953)]