28528760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:768

約数の個数: 64

約数和(自身を含む): 70066080

約数和(自身を除く): 41537320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 83, 104, 130, 166, 260, 332, 415, 520, 661, 664, 830, 1079, 1322, 1660, 2158, 2644, 3305, 3320, 4316, 5288, 5395, 6610, 8593, 8632, 10790, 13220, 17186, 21580, 26440, 34372, 42965, 43160, 54863, 68744, 85930, 109726, 171860, 219452, 274315, 343720, 438904, 548630, 713219, 1097260, 1426438, 2194520, 2852876, 3566095, 5705752, 7132190, 14264380, 28528760]

約数ペア:

[(1, 28528760), (2, 14264380), (4, 7132190), (5, 5705752), (8, 3566095), (10, 2852876), (13, 2194520), (20, 1426438), (26, 1097260), (40, 713219), (52, 548630), (65, 438904), (83, 343720), (104, 274315), (130, 219452), (166, 171860), (260, 109726), (332, 85930), (415, 68744), (520, 54863), (661, 43160), (664, 42965), (830, 34372), (1079, 26440), (1322, 21580), (1660, 17186), (2158, 13220), (2644, 10790), (3305, 8632), (3320, 8593), (4316, 6610), (5288, 5395)]