21705190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1621}}^1$

素因数の和:1744

約数の個数: 32

約数和(自身を含む): 42509376

約数和(自身を除く): 20804186

約数列:

[1, 2, 5, 10, 13, 26, 65, 103, 130, 206, 515, 1030, 1339, 1621, 2678, 3242, 6695, 8105, 13390, 16210, 21073, 42146, 105365, 166963, 210730, 333926, 834815, 1669630, 2170519, 4341038, 10852595, 21705190]

約数ペア:

[(1, 21705190), (2, 10852595), (5, 4341038), (10, 2170519), (13, 1669630), (26, 834815), (65, 333926), (103, 210730), (130, 166963), (206, 105365), (515, 42146), (1030, 21073), (1339, 16210), (1621, 13390), (2678, 8105), (3242, 6695)]