20754225

素因数分解:

$3^4\times 5^2\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:336

約数の個数: 60

約数和(自身を含む): 39625564

約数和(自身を除く): 18871339

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 81, 111, 135, 185, 225, 277, 333, 405, 555, 675, 831, 925, 999, 1385, 1665, 2025, 2493, 2775, 2997, 4155, 4995, 6925, 7479, 8325, 10249, 12465, 14985, 20775, 22437, 24975, 30747, 37395, 51245, 62325, 74925, 92241, 112185, 153735, 186975, 256225, 276723, 461205, 560925, 768675, 830169, 1383615, 2306025, 4150845, 6918075, 20754225]

約数ペア:

[(1, 20754225), (3, 6918075), (5, 4150845), (9, 2306025), (15, 1383615), (25, 830169), (27, 768675), (37, 560925), (45, 461205), (75, 276723), (81, 256225), (111, 186975), (135, 153735), (185, 112185), (225, 92241), (277, 74925), (333, 62325), (405, 51245), (555, 37395), (675, 30747), (831, 24975), (925, 22437), (999, 20775), (1385, 14985), (1665, 12465), (2025, 10249), (2493, 8325), (2775, 7479), (2997, 6925), (4155, 4995)]