640882684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{61933}}^1$

素因数の和:62149

約数の個数: 24

約数和(自身を含む): 1213906400

約数和(自身を除く): 573023716

約数列:

[1, 2, 4, 13, 26, 52, 199, 398, 796, 2587, 5174, 10348, 61933, 123866, 247732, 805129, 1610258, 3220516, 12324667, 24649334, 49298668, 160220671, 320441342, 640882684]

約数ペア:

[(1, 640882684), (2, 320441342), (4, 160220671), (13, 49298668), (26, 24649334), (52, 12324667), (199, 3220516), (398, 1610258), (796, 805129), (2587, 247732), (5174, 123866), (10348, 61933)]