21158265

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{569}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 35349120

約数和(自身を除く): 14190855

約数列:

[1, 3, 5, 15, 37, 67, 111, 185, 201, 335, 555, 569, 1005, 1707, 2479, 2845, 7437, 8535, 12395, 21053, 37185, 38123, 63159, 105265, 114369, 190615, 315795, 571845, 1410551, 4231653, 7052755, 21158265]

約数ペア:

[(1, 21158265), (3, 7052755), (5, 4231653), (15, 1410551), (37, 571845), (67, 315795), (111, 190615), (185, 114369), (201, 105265), (335, 63159), (555, 38123), (569, 37185), (1005, 21053), (1707, 12395), (2479, 8535), (2845, 7437)]