217612180

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{42337}}^1$

素因数の和:42603

約数の個数: 24

約数和(自身を含む): 458774568

約数和(自身を除く): 241162388

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 42337, 84674, 169348, 211685, 423370, 846740, 10880609, 21761218, 43522436, 54403045, 108806090, 217612180]

約数ペア:

[(1, 217612180), (2, 108806090), (4, 54403045), (5, 43522436), (10, 21761218), (20, 10880609), (257, 846740), (514, 423370), (1028, 211685), (1285, 169348), (2570, 84674), (5140, 42337)]