81747225

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:181

約数の個数: 120

約数和(自身を含む): 177647360

約数和(自身を除く): 95900135

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 73, 75, 79, 81, 105, 135, 175, 189, 219, 225, 237, 315, 365, 395, 405, 511, 525, 553, 567, 657, 675, 711, 945, 1095, 1185, 1533, 1575, 1659, 1825, 1971, 1975, 2025, 2133, 2555, 2765, 2835, 3285, 3555, 4599, 4725, 4977, 5475, 5767, 5913, 5925, 6399, 7665, 8295, 9855, 10665, 12775, 13797, 13825, 14175, 14931, 16425, 17301, 17775, 22995, 24885, 28835, 29565, 31995, 38325, 40369, 41391, 41475, 44793, 49275, 51903, 53325, 68985, 74655, 86505, 114975, 121107, 124425, 144175, 147825, 155709, 159975, 201845, 206955, 223965, 259515, 344925, 363321, 373275, 432525, 467127, 605535, 778545, 1009225, 1034775, 1089963, 1119825, 1297575, 1816605, 2335635, 3027675, 3269889, 3892725, 5449815, 9083025, 11678175, 16349445, 27249075, 81747225]

約数ペア:

[(1, 81747225), (3, 27249075), (5, 16349445), (7, 11678175), (9, 9083025), (15, 5449815), (21, 3892725), (25, 3269889), (27, 3027675), (35, 2335635), (45, 1816605), (63, 1297575), (73, 1119825), (75, 1089963), (79, 1034775), (81, 1009225), (105, 778545), (135, 605535), (175, 467127), (189, 432525), (219, 373275), (225, 363321), (237, 344925), (315, 259515), (365, 223965), (395, 206955), (405, 201845), (511, 159975), (525, 155709), (553, 147825), (567, 144175), (657, 124425), (675, 121107), (711, 114975), (945, 86505), (1095, 74655), (1185, 68985), (1533, 53325), (1575, 51903), (1659, 49275), (1825, 44793), (1971, 41475), (1975, 41391), (2025, 40369), (2133, 38325), (2555, 31995), (2765, 29565), (2835, 28835), (3285, 24885), (3555, 22995), (4599, 17775), (4725, 17301), (4977, 16425), (5475, 14931), (5767, 14175), (5913, 13825), (5925, 13797), (6399, 12775), (7665, 10665), (8295, 9855)]