20161816563

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1\times {\mathrm{769}}^1$

素因数の和:1148

約数の個数: 64

約数和(自身を含む): 31739079680

約数和(自身を除く): 11577263117

約数列:

[1, 3, 7, 21, 61, 97, 183, 211, 291, 427, 633, 679, 769, 1281, 1477, 2037, 2307, 4431, 5383, 5917, 12871, 16149, 17751, 20467, 38613, 41419, 46909, 61401, 74593, 90097, 124257, 140727, 143269, 162259, 223779, 270291, 328363, 429807, 486777, 522151, 985089, 1135813, 1248487, 1566453, 3407439, 3745461, 4550173, 8739409, 9897799, 13650519, 15739123, 26218227, 29693397, 31851211, 47217369, 69284593, 95553633, 110173861, 207853779, 330521583, 960086503, 2880259509, 6720605521, 20161816563]

約数ペア:

[(1, 20161816563), (3, 6720605521), (7, 2880259509), (21, 960086503), (61, 330521583), (97, 207853779), (183, 110173861), (211, 95553633), (291, 69284593), (427, 47217369), (633, 31851211), (679, 29693397), (769, 26218227), (1281, 15739123), (1477, 13650519), (2037, 9897799), (2307, 8739409), (4431, 4550173), (5383, 3745461), (5917, 3407439), (12871, 1566453), (16149, 1248487), (17751, 1135813), (20467, 985089), (38613, 522151), (41419, 486777), (46909, 429807), (61401, 328363), (74593, 270291), (90097, 223779), (124257, 162259), (140727, 143269)]