21043025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{739}}^1$

素因数の和:833

約数の個数: 24

約数和(自身を含む): 28078560

約数和(自身を除く): 7035535

約数列:

[1, 5, 17, 25, 67, 85, 335, 425, 739, 1139, 1675, 3695, 5695, 12563, 18475, 28475, 49513, 62815, 247565, 314075, 841721, 1237825, 4208605, 21043025]

約数ペア:

[(1, 21043025), (5, 4208605), (17, 1237825), (25, 841721), (67, 314075), (85, 247565), (335, 62815), (425, 49513), (739, 28475), (1139, 18475), (1675, 12563), (3695, 5695)]