644766766

素因数分解:

$2^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{231431}}^1$

素因数の和:231639

約数の個数: 16

約数和(自身を含む): 1110873600

約数和(自身を除く): 466106834

約数列:

[1, 2, 7, 14, 199, 398, 1393, 2786, 231431, 462862, 1620017, 3240034, 46054769, 92109538, 322383383, 644766766]

約数ペア:

[(1, 644766766), (2, 322383383), (7, 92109538), (14, 46054769), (199, 3240034), (398, 1620017), (1393, 462862), (2786, 231431)]