28741720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4463}}^1$

素因数の和:4504

約数の個数: 64

約数和(自身を含む): 77137920

約数和(自身を除く): 48396200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 4463, 6440, 8926, 17852, 22315, 31241, 35704, 44630, 62482, 89260, 102649, 124964, 156205, 178520, 205298, 249928, 312410, 410596, 513245, 624820, 718543, 821192, 1026490, 1249640, 1437086, 2052980, 2874172, 3592715, 4105960, 5748344, 7185430, 14370860, 28741720]

約数ペア:

[(1, 28741720), (2, 14370860), (4, 7185430), (5, 5748344), (7, 4105960), (8, 3592715), (10, 2874172), (14, 2052980), (20, 1437086), (23, 1249640), (28, 1026490), (35, 821192), (40, 718543), (46, 624820), (56, 513245), (70, 410596), (92, 312410), (115, 249928), (140, 205298), (161, 178520), (184, 156205), (230, 124964), (280, 102649), (322, 89260), (460, 62482), (644, 44630), (805, 35704), (920, 31241), (1288, 22315), (1610, 17852), (3220, 8926), (4463, 6440)]