278330715

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:554

約数の個数: 128

約数和(自身を含む): 595123200

約数和(自身を除く): 316792485

約数列:

[1, 3, 5, 9, 13, 15, 17, 19, 27, 39, 45, 51, 57, 65, 85, 95, 117, 135, 153, 171, 195, 221, 247, 255, 285, 323, 351, 459, 491, 513, 585, 663, 741, 765, 855, 969, 1105, 1235, 1473, 1615, 1755, 1989, 2223, 2295, 2455, 2565, 2907, 3315, 3705, 4199, 4419, 4845, 5967, 6383, 6669, 7365, 8347, 8721, 9329, 9945, 11115, 12597, 13257, 14535, 19149, 20995, 22095, 25041, 27987, 29835, 31915, 33345, 37791, 41735, 43605, 46645, 57447, 62985, 66285, 75123, 83961, 95745, 108511, 113373, 121277, 125205, 139935, 158593, 172341, 188955, 225369, 251883, 287235, 325533, 363831, 375615, 419805, 475779, 542555, 566865, 606385, 792965, 861705, 976599, 1091493, 1126845, 1259415, 1427337, 1627665, 1819155, 2061709, 2378895, 2929797, 3274479, 4282011, 4882995, 5457465, 6185127, 7136685, 10308545, 14648985, 16372395, 18555381, 21410055, 30925635, 55666143, 92776905, 278330715]

約数ペア:

[(1, 278330715), (3, 92776905), (5, 55666143), (9, 30925635), (13, 21410055), (15, 18555381), (17, 16372395), (19, 14648985), (27, 10308545), (39, 7136685), (45, 6185127), (51, 5457465), (57, 4882995), (65, 4282011), (85, 3274479), (95, 2929797), (117, 2378895), (135, 2061709), (153, 1819155), (171, 1627665), (195, 1427337), (221, 1259415), (247, 1126845), (255, 1091493), (285, 976599), (323, 861705), (351, 792965), (459, 606385), (491, 566865), (513, 542555), (585, 475779), (663, 419805), (741, 375615), (765, 363831), (855, 325533), (969, 287235), (1105, 251883), (1235, 225369), (1473, 188955), (1615, 172341), (1755, 158593), (1989, 139935), (2223, 125205), (2295, 121277), (2455, 113373), (2565, 108511), (2907, 95745), (3315, 83961), (3705, 75123), (4199, 66285), (4419, 62985), (4845, 57447), (5967, 46645), (6383, 43605), (6669, 41735), (7365, 37791), (8347, 33345), (8721, 31915), (9329, 29835), (9945, 27987), (11115, 25041), (12597, 22095), (13257, 20995), (14535, 19149)]