21540351

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^2\times {\mathrm{277}}^1$

素因数の和:340

約数の個数: 36

約数和(自身を含む): 35051352

約数和(自身を除く): 13511001

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 277, 483, 529, 831, 1127, 1587, 1939, 3381, 3703, 5817, 6371, 11109, 13573, 19113, 25921, 40719, 44597, 77763, 133791, 146533, 312179, 439599, 936537, 1025731, 3077193, 7180117, 21540351]

約数ペア:

[(1, 21540351), (3, 7180117), (7, 3077193), (21, 1025731), (23, 936537), (49, 439599), (69, 312179), (147, 146533), (161, 133791), (277, 77763), (483, 44597), (529, 40719), (831, 25921), (1127, 19113), (1587, 13573), (1939, 11109), (3381, 6371), (3703, 5817)]