21606928

素因数分解:

$2^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1873}}^1$

素因数の和:1991

約数の個数: 40

約数和(自身を含む): 48334208

約数和(自身を除く): 26727280

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 103, 112, 206, 412, 721, 824, 1442, 1648, 1873, 2884, 3746, 5768, 7492, 11536, 13111, 14984, 26222, 29968, 52444, 104888, 192919, 209776, 385838, 771676, 1350433, 1543352, 2700866, 3086704, 5401732, 10803464, 21606928]

約数ペア:

[(1, 21606928), (2, 10803464), (4, 5401732), (7, 3086704), (8, 2700866), (14, 1543352), (16, 1350433), (28, 771676), (56, 385838), (103, 209776), (112, 192919), (206, 104888), (412, 52444), (721, 29968), (824, 26222), (1442, 14984), (1648, 13111), (1873, 11536), (2884, 7492), (3746, 5768)]