21790125

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{2767}}^1$

素因数の和:2795

約数の個数: 48

約数和(自身を含む): 44908032

約数和(自身を除く): 23117907

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 875, 1125, 1575, 2625, 2767, 7875, 8301, 13835, 19369, 24903, 41505, 58107, 69175, 96845, 124515, 174321, 207525, 290535, 345875, 484225, 622575, 871605, 1037625, 1452675, 2421125, 3112875, 4358025, 7263375, 21790125]

約数ペア:

[(1, 21790125), (3, 7263375), (5, 4358025), (7, 3112875), (9, 2421125), (15, 1452675), (21, 1037625), (25, 871605), (35, 622575), (45, 484225), (63, 345875), (75, 290535), (105, 207525), (125, 174321), (175, 124515), (225, 96845), (315, 69175), (375, 58107), (525, 41505), (875, 24903), (1125, 19369), (1575, 13835), (2625, 8301), (2767, 7875)]