21796695

素因数分解:

$3^4\times 5^1\times {\mathrm{53819}}^1$

素因数の和:53836

約数の個数: 20

約数和(自身を含む): 39073320

約数和(自身を除く): 17276625

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53819, 161457, 269095, 484371, 807285, 1453113, 2421855, 4359339, 7265565, 21796695]

約数ペア:

[(1, 21796695), (3, 7265565), (5, 4359339), (9, 2421855), (15, 1453113), (27, 807285), (45, 484371), (81, 269095), (135, 161457), (405, 53819)]