21999945

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{883}}^1$

素因数の和:1053

約数の個数: 32

約数和(自身を含む): 38697984

約数和(自身を除く): 16698039

約数列:

[1, 3, 5, 11, 15, 33, 55, 151, 165, 453, 755, 883, 1661, 2265, 2649, 4415, 4983, 8305, 9713, 13245, 24915, 29139, 48565, 133333, 145695, 399999, 666665, 1466663, 1999995, 4399989, 7333315, 21999945]

約数ペア:

[(1, 21999945), (3, 7333315), (5, 4399989), (11, 1999995), (15, 1466663), (33, 666665), (55, 399999), (151, 145695), (165, 133333), (453, 48565), (755, 29139), (883, 24915), (1661, 13245), (2265, 9713), (2649, 8305), (4415, 4983)]