20171054575

素因数分解:

$5^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{263}}^1\times {\mathrm{457}}^1$

素因数の和:881

約数の個数: 72

約数和(自身を含む): 29483907552

約数和(自身を除く): 9312852977

約数列:

[1, 5, 7, 25, 35, 49, 137, 175, 245, 263, 457, 685, 959, 1225, 1315, 1841, 2285, 3199, 3425, 4795, 6575, 6713, 9205, 11425, 12887, 15995, 22393, 23975, 33565, 36031, 46025, 62609, 64435, 79975, 111965, 120191, 167825, 180155, 252217, 313045, 322175, 438263, 559825, 600955, 841337, 900775, 1261085, 1565225, 1765519, 2191315, 3004775, 3067841, 4206685, 5889359, 6305425, 8827595, 10956575, 15339205, 16466167, 21033425, 29446795, 44137975, 76696025, 82330835, 115263169, 147233975, 411654175, 576315845, 806842183, 2881579225, 4034210915, 20171054575]

約数ペア:

[(1, 20171054575), (5, 4034210915), (7, 2881579225), (25, 806842183), (35, 576315845), (49, 411654175), (137, 147233975), (175, 115263169), (245, 82330835), (263, 76696025), (457, 44137975), (685, 29446795), (959, 21033425), (1225, 16466167), (1315, 15339205), (1841, 10956575), (2285, 8827595), (3199, 6305425), (3425, 5889359), (4795, 4206685), (6575, 3067841), (6713, 3004775), (9205, 2191315), (11425, 1765519), (12887, 1565225), (15995, 1261085), (22393, 900775), (23975, 841337), (33565, 600955), (36031, 559825), (46025, 438263), (62609, 322175), (64435, 313045), (79975, 252217), (111965, 180155), (120191, 167825)]