21090375

素因数分解:

$3^4\times 5^3\times {\mathrm{2083}}^1$

素因数の和:2110

約数の個数: 40

約数和(自身を含む): 39337584

約数和(自身を除く): 18247209

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 2025, 2083, 3375, 6249, 10125, 10415, 18747, 31245, 52075, 56241, 93735, 156225, 168723, 260375, 281205, 468675, 781125, 843615, 1406025, 2343375, 4218075, 7030125, 21090375]

約数ペア:

[(1, 21090375), (3, 7030125), (5, 4218075), (9, 2343375), (15, 1406025), (25, 843615), (27, 781125), (45, 468675), (75, 281205), (81, 260375), (125, 168723), (135, 156225), (225, 93735), (375, 56241), (405, 52075), (675, 31245), (1125, 18747), (2025, 10415), (2083, 10125), (3375, 6249)]