21449529

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 34926408

約数和(自身を除く): 13476879

約数列:

[1, 3, 9, 17, 27, 37, 51, 81, 111, 153, 333, 421, 459, 629, 999, 1263, 1377, 1887, 2997, 3789, 5661, 7157, 11367, 15577, 16983, 21471, 34101, 46731, 50949, 64413, 140193, 193239, 264809, 420579, 579717, 794427, 1261737, 2383281, 7149843, 21449529]

約数ペア:

[(1, 21449529), (3, 7149843), (9, 2383281), (17, 1261737), (27, 794427), (37, 579717), (51, 420579), (81, 264809), (111, 193239), (153, 140193), (333, 64413), (421, 50949), (459, 46731), (629, 34101), (999, 21471), (1263, 16983), (1377, 15577), (1887, 11367), (2997, 7157), (3789, 5661)]