21453332

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{509}}^1$

素因数の和:811

約数の個数: 24

約数和(自身を含む): 38684520

約数和(自身を除く): 17231188

約数列:

[1, 2, 4, 41, 82, 164, 257, 509, 514, 1018, 1028, 2036, 10537, 20869, 21074, 41738, 42148, 83476, 130813, 261626, 523252, 5363333, 10726666, 21453332]

約数ペア:

[(1, 21453332), (2, 10726666), (4, 5363333), (41, 523252), (82, 261626), (164, 130813), (257, 83476), (509, 42148), (514, 41738), (1018, 21074), (1028, 20869), (2036, 10537)]