21509013904

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1327}}^1\times {\mathrm{8513}}^1$

素因数の和:9872

約数の個数: 80

約数和(自身を含む): 50472626688

約数和(自身を除く): 28963612784

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 476, 952, 1327, 1904, 2654, 5308, 8513, 9289, 10616, 17026, 18578, 21232, 22559, 34052, 37156, 45118, 59591, 68104, 74312, 90236, 119182, 136208, 144721, 148624, 157913, 180472, 238364, 289442, 315826, 360944, 476728, 578884, 631652, 953456, 1013047, 1157768, 1263304, 2026094, 2315536, 2526608, 4052188, 8104376, 11296751, 16208752, 22593502, 45187004, 79077257, 90374008, 158154514, 180748016, 192044767, 316309028, 384089534, 632618056, 768179068, 1265236112, 1344313369, 1536358136, 2688626738, 3072716272, 5377253476, 10754506952, 21509013904]

約数ペア:

[(1, 21509013904), (2, 10754506952), (4, 5377253476), (7, 3072716272), (8, 2688626738), (14, 1536358136), (16, 1344313369), (17, 1265236112), (28, 768179068), (34, 632618056), (56, 384089534), (68, 316309028), (112, 192044767), (119, 180748016), (136, 158154514), (238, 90374008), (272, 79077257), (476, 45187004), (952, 22593502), (1327, 16208752), (1904, 11296751), (2654, 8104376), (5308, 4052188), (8513, 2526608), (9289, 2315536), (10616, 2026094), (17026, 1263304), (18578, 1157768), (21232, 1013047), (22559, 953456), (34052, 631652), (37156, 578884), (45118, 476728), (59591, 360944), (68104, 315826), (74312, 289442), (90236, 238364), (119182, 180472), (136208, 157913), (144721, 148624)]