20112761825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{227}}^1\times {\mathrm{313}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 27617616288

約数和(自身を除く): 7504854463

約数列:

[1, 5, 13, 25, 65, 67, 169, 227, 313, 325, 335, 845, 871, 1135, 1565, 1675, 2951, 4069, 4225, 4355, 5675, 7825, 11323, 14755, 15209, 20345, 20971, 21775, 38363, 52897, 56615, 71051, 73775, 76045, 101725, 104855, 191815, 197717, 264485, 272623, 283075, 355255, 380225, 524275, 923663, 959075, 988585, 1322425, 1363115, 1776275, 2570321, 3544099, 4618315, 4760417, 4942925, 6815575, 12007619, 12851605, 17720495, 23091575, 23802085, 60038095, 61885421, 64258025, 88602475, 119010425, 300190475, 309427105, 804510473, 1547135525, 4022552365, 20112761825]

約数ペア:

[(1, 20112761825), (5, 4022552365), (13, 1547135525), (25, 804510473), (65, 309427105), (67, 300190475), (169, 119010425), (227, 88602475), (313, 64258025), (325, 61885421), (335, 60038095), (845, 23802085), (871, 23091575), (1135, 17720495), (1565, 12851605), (1675, 12007619), (2951, 6815575), (4069, 4942925), (4225, 4760417), (4355, 4618315), (5675, 3544099), (7825, 2570321), (11323, 1776275), (14755, 1363115), (15209, 1322425), (20345, 988585), (20971, 959075), (21775, 923663), (38363, 524275), (52897, 380225), (56615, 355255), (71051, 283075), (73775, 272623), (76045, 264485), (101725, 197717), (104855, 191815)]