21000228190

素因数分解:

$2^1\times 5^1\times {\mathrm{16139}}^1\times {\mathrm{130121}}^1$

素因数の和:146267

約数の個数: 16

約数和(自身を含む): 37803043440

約数和(自身を除く): 16802815250

約数列:

[1, 2, 5, 10, 16139, 32278, 80695, 130121, 161390, 260242, 650605, 1301210, 2100022819, 4200045638, 10500114095, 21000228190]

約数ペア:

[(1, 21000228190), (2, 10500114095), (5, 4200045638), (10, 2100022819), (16139, 1301210), (32278, 650605), (80695, 260242), (130121, 161390)]