21290313

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{659}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 31600800

約数和(自身を除く): 10310487

約数列:

[1, 3, 11, 33, 89, 121, 267, 363, 659, 979, 1977, 2937, 7249, 10769, 21747, 32307, 58651, 79739, 175953, 239217, 645161, 1935483, 7096771, 21290313]

約数ペア:

[(1, 21290313), (3, 7096771), (11, 1935483), (33, 645161), (89, 239217), (121, 175953), (267, 79739), (363, 58651), (659, 32307), (979, 21747), (1977, 10769), (2937, 7249)]