21585416

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{50909}}^1$

素因数の和:50968

約数の個数: 16

約数和(自身を含む): 41237100

約数和(自身を除く): 19651684

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 50909, 101818, 203636, 407272, 2698177, 5396354, 10792708, 21585416]

約数ペア:

[(1, 21585416), (2, 10792708), (4, 5396354), (8, 2698177), (53, 407272), (106, 203636), (212, 101818), (424, 50909)]