21588555

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2731}}^1$

素因数の和:2787

約数の個数: 32

約数和(自身を含む): 37767168

約数和(自身を除く): 16178613

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2635, 2731, 7905, 8193, 13655, 40965, 46427, 84661, 139281, 232135, 253983, 423305, 696405, 1269915, 1439237, 4317711, 7196185, 21588555]

約数ペア:

[(1, 21588555), (3, 7196185), (5, 4317711), (15, 1439237), (17, 1269915), (31, 696405), (51, 423305), (85, 253983), (93, 232135), (155, 139281), (255, 84661), (465, 46427), (527, 40965), (1581, 13655), (2635, 8193), (2731, 7905)]