21215095

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{283}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 29445120

約数和(自身を除く): 8230025

約数列:

[1, 5, 11, 29, 47, 55, 145, 235, 283, 319, 517, 1363, 1415, 1595, 2585, 3113, 6815, 8207, 13301, 14993, 15565, 41035, 66505, 74965, 90277, 146311, 385729, 451385, 731555, 1928645, 4243019, 21215095]

約数ペア:

[(1, 21215095), (5, 4243019), (11, 1928645), (29, 731555), (47, 451385), (55, 385729), (145, 146311), (235, 90277), (283, 74965), (319, 66505), (517, 41035), (1363, 15565), (1415, 14993), (1595, 13301), (2585, 8207), (3113, 6815)]