21770216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{593}}^1$

素因数の和:965

約数の個数: 32

約数和(自身を含む): 44157960

約数和(自身を除く): 22387744

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 353, 593, 706, 1186, 1412, 2372, 2824, 4589, 4744, 7709, 9178, 15418, 18356, 30836, 36712, 61672, 209329, 418658, 837316, 1674632, 2721277, 5442554, 10885108, 21770216]

約数ペア:

[(1, 21770216), (2, 10885108), (4, 5442554), (8, 2721277), (13, 1674632), (26, 837316), (52, 418658), (104, 209329), (353, 61672), (593, 36712), (706, 30836), (1186, 18356), (1412, 15418), (2372, 9178), (2824, 7709), (4589, 4744)]