217423845

素因数分解:

$3^4\times 5^1\times {\mathrm{536849}}^1$

素因数の和:536866

約数の個数: 20

約数和(自身を含む): 389753100

約数和(自身を除く): 172329255

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 536849, 1610547, 2684245, 4831641, 8052735, 14494923, 24158205, 43484769, 72474615, 217423845]

約数ペア:

[(1, 217423845), (3, 72474615), (5, 43484769), (9, 24158205), (15, 14494923), (27, 8052735), (45, 4831641), (81, 2684245), (135, 1610547), (405, 536849)]