21143272

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61463}}^1$

素因数の和:61512

約数の個数: 16

約数和(自身を含む): 40566240

約数和(自身を除く): 19422968

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 61463, 122926, 245852, 491704, 2642909, 5285818, 10571636, 21143272]

約数ペア:

[(1, 21143272), (2, 10571636), (4, 5285818), (8, 2642909), (43, 491704), (86, 245852), (172, 122926), (344, 61463)]