21536529

素因数分解:

$3^1\times 7^2\times {\mathrm{239}}^1\times {\mathrm{613}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 33598080

約数和(自身を除く): 12061551

約数列:

[1, 3, 7, 21, 49, 147, 239, 613, 717, 1673, 1839, 4291, 5019, 11711, 12873, 30037, 35133, 90111, 146507, 439521, 1025549, 3076647, 7178843, 21536529]

約数ペア:

[(1, 21536529), (3, 7178843), (7, 3076647), (21, 1025549), (49, 439521), (147, 146507), (239, 90111), (613, 35133), (717, 30037), (1673, 12873), (1839, 11711), (4291, 5019)]