205099880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{138581}}^1$

素因数の和:138629

約数の個数: 32

約数和(自身を含む): 473950440

約数和(自身を除く): 268850560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 138581, 277162, 554324, 692905, 1108648, 1385810, 2771620, 5127497, 5543240, 10254994, 20509988, 25637485, 41019976, 51274970, 102549940, 205099880]

約数ペア:

[(1, 205099880), (2, 102549940), (4, 51274970), (5, 41019976), (8, 25637485), (10, 20509988), (20, 10254994), (37, 5543240), (40, 5127497), (74, 2771620), (148, 1385810), (185, 1108648), (296, 692905), (370, 554324), (740, 277162), (1480, 138581)]