858989090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{19661}}^1$

素因数の和:19942

約数の個数: 32

約数和(自身を含む): 1643585904

約数和(自身を除く): 784596814

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 257, 514, 1285, 2570, 4369, 8738, 19661, 21845, 39322, 43690, 98305, 196610, 334237, 668474, 1671185, 3342370, 5052877, 10105754, 25264385, 50528770, 85898909, 171797818, 429494545, 858989090]

約数ペア:

[(1, 858989090), (2, 429494545), (5, 171797818), (10, 85898909), (17, 50528770), (34, 25264385), (85, 10105754), (170, 5052877), (257, 3342370), (514, 1671185), (1285, 668474), (2570, 334237), (4369, 196610), (8738, 98305), (19661, 43690), (21845, 39322)]