15721371

素因数分解:

$3^5\times {\mathrm{31}}^1\times {\mathrm{2087}}^1$

素因数の和:2133

約数の個数: 24

約数和(自身を含む): 24321024

約数和(自身を除く): 8599653

約数列:

[1, 3, 9, 27, 31, 81, 93, 243, 279, 837, 2087, 2511, 6261, 7533, 18783, 56349, 64697, 169047, 194091, 507141, 582273, 1746819, 5240457, 15721371]

約数ペア:

[(1, 15721371), (3, 5240457), (9, 1746819), (27, 582273), (31, 507141), (81, 194091), (93, 169047), (243, 64697), (279, 56349), (837, 18783), (2087, 7533), (2511, 6261)]