81127865

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:202

約数の個数: 64

約数和(自身を含む): 126658560

約数和(自身を除く): 45530695

約数列:

[1, 5, 7, 13, 35, 37, 61, 65, 79, 91, 185, 259, 305, 395, 427, 455, 481, 553, 793, 1027, 1295, 2135, 2257, 2405, 2765, 2923, 3367, 3965, 4819, 5135, 5551, 7189, 11285, 14615, 15799, 16835, 20461, 24095, 27755, 29341, 33733, 35945, 37999, 62647, 78995, 102305, 146705, 168665, 178303, 189995, 205387, 265993, 313235, 438529, 891515, 1026935, 1248121, 1329965, 2192645, 2317939, 6240605, 11589695, 16225573, 81127865]

約数ペア:

[(1, 81127865), (5, 16225573), (7, 11589695), (13, 6240605), (35, 2317939), (37, 2192645), (61, 1329965), (65, 1248121), (79, 1026935), (91, 891515), (185, 438529), (259, 313235), (305, 265993), (395, 205387), (427, 189995), (455, 178303), (481, 168665), (553, 146705), (793, 102305), (1027, 78995), (1295, 62647), (2135, 37999), (2257, 35945), (2405, 33733), (2765, 29341), (2923, 27755), (3367, 24095), (3965, 20461), (4819, 16835), (5135, 15799), (5551, 14615), (7189, 11285)]