21261129745

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1759}}^1\times {\mathrm{2689}}^1$

素因数の和:4513

約数の個数: 32

約数和(自身を含む): 27270144000

約数和(自身を除く): 6009014255

約数列:

[1, 5, 29, 31, 145, 155, 899, 1759, 2689, 4495, 8795, 13445, 51011, 54529, 77981, 83359, 255055, 272645, 389905, 416795, 1581341, 2417411, 4729951, 7906705, 12087055, 23649755, 137168579, 146628481, 685842895, 733142405, 4252225949, 21261129745]

約数ペア:

[(1, 21261129745), (5, 4252225949), (29, 733142405), (31, 685842895), (145, 146628481), (155, 137168579), (899, 23649755), (1759, 12087055), (2689, 7906705), (4495, 4729951), (8795, 2417411), (13445, 1581341), (51011, 416795), (54529, 389905), (77981, 272645), (83359, 255055)]