81187600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1201}}^1$

素因数の和:1245

約数の個数: 90

約数和(自身を含む): 211387326

約数和(自身を除く): 130199726

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 169, 200, 208, 260, 325, 338, 400, 520, 650, 676, 845, 1040, 1201, 1300, 1352, 1690, 2402, 2600, 2704, 3380, 4225, 4804, 5200, 6005, 6760, 8450, 9608, 12010, 13520, 15613, 16900, 19216, 24020, 30025, 31226, 33800, 48040, 60050, 62452, 67600, 78065, 96080, 120100, 124904, 156130, 202969, 240200, 249808, 312260, 390325, 405938, 480400, 624520, 780650, 811876, 1014845, 1249040, 1561300, 1623752, 2029690, 3122600, 3247504, 4059380, 5074225, 6245200, 8118760, 10148450, 16237520, 20296900, 40593800, 81187600]

約数ペア:

[(1, 81187600), (2, 40593800), (4, 20296900), (5, 16237520), (8, 10148450), (10, 8118760), (13, 6245200), (16, 5074225), (20, 4059380), (25, 3247504), (26, 3122600), (40, 2029690), (50, 1623752), (52, 1561300), (65, 1249040), (80, 1014845), (100, 811876), (104, 780650), (130, 624520), (169, 480400), (200, 405938), (208, 390325), (260, 312260), (325, 249808), (338, 240200), (400, 202969), (520, 156130), (650, 124904), (676, 120100), (845, 96080), (1040, 78065), (1201, 67600), (1300, 62452), (1352, 60050), (1690, 48040), (2402, 33800), (2600, 31226), (2704, 30025), (3380, 24020), (4225, 19216), (4804, 16900), (5200, 15613), (6005, 13520), (6760, 12010), (8450, 9608)]