20525254875

素因数分解:

$3^3\times 5^3\times {\mathrm{73}}^1\times {\mathrm{227}}^1\times {\mathrm{367}}^1$

素因数の和:691

約数の個数: 128

約数和(自身を含む): 38743511040

約数和(自身を除く): 18218256165

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 73, 75, 125, 135, 219, 225, 227, 365, 367, 375, 657, 675, 681, 1095, 1101, 1125, 1135, 1825, 1835, 1971, 2043, 3285, 3303, 3375, 3405, 5475, 5505, 5675, 6129, 9125, 9175, 9855, 9909, 10215, 16425, 16515, 16571, 17025, 26791, 27375, 27525, 28375, 30645, 45875, 49275, 49545, 49713, 51075, 80373, 82125, 82575, 82855, 83309, 85125, 133955, 137625, 149139, 153225, 241119, 246375, 247725, 248565, 249927, 255375, 401865, 412875, 414275, 416545, 447417, 669775, 723357, 745695, 749781, 766125, 1205595, 1238625, 1242825, 1249635, 2009325, 2071375, 2082725, 2237085, 2249343, 3348875, 3616785, 3728475, 3748905, 6027975, 6081557, 6214125, 6248175, 10046625, 10413625, 11185425, 11246715, 18083925, 18244671, 18642375, 18744525, 30139875, 30407785, 31240875, 54734013, 55927125, 56233575, 90419625, 91223355, 93722625, 152038925, 164202039, 273670065, 281167875, 456116775, 760194625, 821010195, 1368350325, 2280583875, 4105050975, 6841751625, 20525254875]

約数ペア:

[(1, 20525254875), (3, 6841751625), (5, 4105050975), (9, 2280583875), (15, 1368350325), (25, 821010195), (27, 760194625), (45, 456116775), (73, 281167875), (75, 273670065), (125, 164202039), (135, 152038925), (219, 93722625), (225, 91223355), (227, 90419625), (365, 56233575), (367, 55927125), (375, 54734013), (657, 31240875), (675, 30407785), (681, 30139875), (1095, 18744525), (1101, 18642375), (1125, 18244671), (1135, 18083925), (1825, 11246715), (1835, 11185425), (1971, 10413625), (2043, 10046625), (3285, 6248175), (3303, 6214125), (3375, 6081557), (3405, 6027975), (5475, 3748905), (5505, 3728475), (5675, 3616785), (6129, 3348875), (9125, 2249343), (9175, 2237085), (9855, 2082725), (9909, 2071375), (10215, 2009325), (16425, 1249635), (16515, 1242825), (16571, 1238625), (17025, 1205595), (26791, 766125), (27375, 749781), (27525, 745695), (28375, 723357), (30645, 669775), (45875, 447417), (49275, 416545), (49545, 414275), (49713, 412875), (51075, 401865), (80373, 255375), (82125, 249927), (82575, 248565), (82855, 247725), (83309, 246375), (85125, 241119), (133955, 153225), (137625, 149139)]