21717325

素因数分解:

$5^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{643}}^1$

素因数の和:853

約数の個数: 24

約数和(自身を含む): 30984128

約数和(自身を除く): 9266803

約数列:

[1, 5, 7, 25, 35, 175, 193, 643, 965, 1351, 3215, 4501, 4825, 6755, 16075, 22505, 33775, 112525, 124099, 620495, 868693, 3102475, 4343465, 21717325]

約数ペア:

[(1, 21717325), (5, 4343465), (7, 3102475), (25, 868693), (35, 620495), (175, 124099), (193, 112525), (643, 33775), (965, 22505), (1351, 16075), (3215, 6755), (4501, 4825)]