21015304

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61091}}^1$

素因数の和:61140

約数の個数: 16

約数和(自身を含む): 40320720

約数和(自身を除く): 19305416

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 61091, 122182, 244364, 488728, 2626913, 5253826, 10507652, 21015304]

約数ペア:

[(1, 21015304), (2, 10507652), (4, 5253826), (8, 2626913), (43, 488728), (86, 244364), (172, 122182), (344, 61091)]