21258369

素因数分解:

$3^6\times {\mathrm{11}}^2\times {\mathrm{241}}^1$

素因数の和:281

約数の個数: 42

約数和(自身を含む): 35179298

約数和(自身を除く): 13920929

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 121, 241, 243, 297, 363, 723, 729, 891, 1089, 2169, 2651, 2673, 3267, 6507, 7953, 8019, 9801, 19521, 23859, 29161, 29403, 58563, 71577, 87483, 88209, 175689, 214731, 262449, 644193, 787347, 1932579, 2362041, 7086123, 21258369]

約数ペア:

[(1, 21258369), (3, 7086123), (9, 2362041), (11, 1932579), (27, 787347), (33, 644193), (81, 262449), (99, 214731), (121, 175689), (241, 88209), (243, 87483), (297, 71577), (363, 58563), (723, 29403), (729, 29161), (891, 23859), (1089, 19521), (2169, 9801), (2651, 8019), (2673, 7953), (3267, 6507)]