21906801

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3739}}^1$

素因数の和:3786

約数の個数: 32

約数和(自身を含む): 38297600

約数和(自身を除く): 16390799

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 189, 217, 279, 651, 837, 1953, 3739, 5859, 11217, 26173, 33651, 78519, 100953, 115909, 235557, 347727, 706671, 811363, 1043181, 2434089, 3129543, 7302267, 21906801]

約数ペア:

[(1, 21906801), (3, 7302267), (7, 3129543), (9, 2434089), (21, 1043181), (27, 811363), (31, 706671), (63, 347727), (93, 235557), (189, 115909), (217, 100953), (279, 78519), (651, 33651), (837, 26173), (1953, 11217), (3739, 5859)]