21738129

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{277}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 34480896

約数和(自身を除く): 12742767

約数列:

[1, 3, 7, 21, 37, 101, 111, 259, 277, 303, 707, 777, 831, 1939, 2121, 3737, 5817, 10249, 11211, 26159, 27977, 30747, 71743, 78477, 83931, 195839, 215229, 587517, 1035149, 3105447, 7246043, 21738129]

約数ペア:

[(1, 21738129), (3, 7246043), (7, 3105447), (21, 1035149), (37, 587517), (101, 215229), (111, 195839), (259, 83931), (277, 78477), (303, 71743), (707, 30747), (777, 27977), (831, 26159), (1939, 11211), (2121, 10249), (3737, 5817)]