21334719

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12534081

約数列:

[1, 3, 7, 21, 41, 71, 123, 213, 287, 349, 497, 861, 1047, 1491, 2443, 2911, 7329, 8733, 14309, 20377, 24779, 42927, 61131, 74337, 100163, 173453, 300489, 520359, 1015939, 3047817, 7111573, 21334719]

約数ペア:

[(1, 21334719), (3, 7111573), (7, 3047817), (21, 1015939), (41, 520359), (71, 300489), (123, 173453), (213, 100163), (287, 74337), (349, 61131), (497, 42927), (861, 24779), (1047, 20377), (1491, 14309), (2443, 8733), (2911, 7329)]