20904884

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:285

約数の個数: 96

約数和(自身を含む): 51480576

約数和(自身を除く): 30575692

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 23, 26, 28, 44, 46, 52, 77, 91, 92, 143, 154, 161, 182, 227, 253, 286, 299, 308, 322, 364, 454, 506, 572, 598, 644, 908, 1001, 1012, 1196, 1589, 1771, 2002, 2093, 2497, 2951, 3178, 3289, 3542, 4004, 4186, 4994, 5221, 5902, 6356, 6578, 7084, 8372, 9988, 10442, 11804, 13156, 17479, 20657, 20884, 23023, 32461, 34958, 36547, 41314, 46046, 57431, 64922, 67873, 69916, 73094, 82628, 92092, 114862, 129844, 135746, 146188, 227227, 229724, 271492, 402017, 454454, 475111, 746603, 804034, 908908, 950222, 1493206, 1608068, 1900444, 2986412, 5226221, 10452442, 20904884]

約数ペア:

[(1, 20904884), (2, 10452442), (4, 5226221), (7, 2986412), (11, 1900444), (13, 1608068), (14, 1493206), (22, 950222), (23, 908908), (26, 804034), (28, 746603), (44, 475111), (46, 454454), (52, 402017), (77, 271492), (91, 229724), (92, 227227), (143, 146188), (154, 135746), (161, 129844), (182, 114862), (227, 92092), (253, 82628), (286, 73094), (299, 69916), (308, 67873), (322, 64922), (364, 57431), (454, 46046), (506, 41314), (572, 36547), (598, 34958), (644, 32461), (908, 23023), (1001, 20884), (1012, 20657), (1196, 17479), (1589, 13156), (1771, 11804), (2002, 10442), (2093, 9988), (2497, 8372), (2951, 7084), (3178, 6578), (3289, 6356), (3542, 5902), (4004, 5221), (4186, 4994)]