128761984

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{347}}^1$

素因数の和:597

約数の個数: 64

約数和(自身を含む): 278288640

約数和(自身を除く): 149526656

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 223, 347, 416, 446, 694, 832, 892, 1388, 1664, 1784, 2776, 2899, 3568, 4511, 5552, 5798, 7136, 9022, 11104, 11596, 14272, 18044, 22208, 23192, 28544, 36088, 44416, 46384, 72176, 77381, 92768, 144352, 154762, 185536, 288704, 309524, 371072, 577408, 619048, 1005953, 1238096, 2011906, 2476192, 4023812, 4952384, 8047624, 9904768, 16095248, 32190496, 64380992, 128761984]

約数ペア:

[(1, 128761984), (2, 64380992), (4, 32190496), (8, 16095248), (13, 9904768), (16, 8047624), (26, 4952384), (32, 4023812), (52, 2476192), (64, 2011906), (104, 1238096), (128, 1005953), (208, 619048), (223, 577408), (347, 371072), (416, 309524), (446, 288704), (694, 185536), (832, 154762), (892, 144352), (1388, 92768), (1664, 77381), (1784, 72176), (2776, 46384), (2899, 44416), (3568, 36088), (4511, 28544), (5552, 23192), (5798, 22208), (7136, 18044), (9022, 14272), (11104, 11596)]