21964221

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1613}}^1$

素因数の和:1725

約数の個数: 24

約数和(自身を含む): 33990840

約数和(自身を除く): 12026619

約数列:

[1, 3, 9, 17, 51, 89, 153, 267, 801, 1513, 1613, 4539, 4839, 13617, 14517, 27421, 82263, 143557, 246789, 430671, 1292013, 2440469, 7321407, 21964221]

約数ペア:

[(1, 21964221), (3, 7321407), (9, 2440469), (17, 1292013), (51, 430671), (89, 246789), (153, 143557), (267, 82263), (801, 27421), (1513, 14517), (1613, 13617), (4539, 4839)]