21989416

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{88667}}^1$

素因数の和:88704

約数の個数: 16

約数和(自身を含む): 42560640

約数和(自身を除く): 20571224

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 88667, 177334, 354668, 709336, 2748677, 5497354, 10994708, 21989416]

約数ペア:

[(1, 21989416), (2, 10994708), (4, 5497354), (8, 2748677), (31, 709336), (62, 354668), (124, 177334), (248, 88667)]