20704275

素因数分解:

$3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{829}}^1$

素因数の和:885

約数の個数: 48

約数和(自身を含む): 39109600

約数和(自身を除く): 18405325

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 111, 135, 185, 225, 333, 555, 675, 829, 925, 999, 1665, 2487, 2775, 4145, 4995, 7461, 8325, 12435, 20725, 22383, 24975, 30673, 37305, 62175, 92019, 111915, 153365, 186525, 276057, 460095, 559575, 766825, 828171, 1380285, 2300475, 4140855, 6901425, 20704275]

約数ペア:

[(1, 20704275), (3, 6901425), (5, 4140855), (9, 2300475), (15, 1380285), (25, 828171), (27, 766825), (37, 559575), (45, 460095), (75, 276057), (111, 186525), (135, 153365), (185, 111915), (225, 92019), (333, 62175), (555, 37305), (675, 30673), (829, 24975), (925, 22383), (999, 20725), (1665, 12435), (2487, 8325), (2775, 7461), (4145, 4995)]