21858255

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1741}}^1$

素因数の和:1789

約数の個数: 40

約数和(自身を含む): 40470144

約数和(自身を除く): 18611889

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 1741, 2511, 4185, 5223, 8705, 12555, 15669, 26115, 47007, 53971, 78345, 141021, 161913, 235035, 269855, 485739, 705105, 809565, 1457217, 2428695, 4371651, 7286085, 21858255]

約数ペア:

[(1, 21858255), (3, 7286085), (5, 4371651), (9, 2428695), (15, 1457217), (27, 809565), (31, 705105), (45, 485739), (81, 269855), (93, 235035), (135, 161913), (155, 141021), (279, 78345), (405, 53971), (465, 47007), (837, 26115), (1395, 15669), (1741, 12555), (2511, 8705), (4185, 5223)]