21314997

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^2\times {\mathrm{37}}^1$

素因数の和:111

約数の個数: 54

約数和(自身を含む): 36333206

約数和(自身を除く): 15018209

約数列:

[1, 3, 9, 11, 23, 33, 37, 69, 99, 111, 121, 207, 253, 333, 363, 407, 529, 759, 851, 1089, 1221, 1587, 2277, 2553, 2783, 3663, 4477, 4761, 5819, 7659, 8349, 9361, 13431, 17457, 19573, 25047, 28083, 40293, 52371, 58719, 64009, 84249, 102971, 176157, 192027, 215303, 308913, 576081, 645909, 926739, 1937727, 2368333, 7104999, 21314997]

約数ペア:

[(1, 21314997), (3, 7104999), (9, 2368333), (11, 1937727), (23, 926739), (33, 645909), (37, 576081), (69, 308913), (99, 215303), (111, 192027), (121, 176157), (207, 102971), (253, 84249), (333, 64009), (363, 58719), (407, 52371), (529, 40293), (759, 28083), (851, 25047), (1089, 19573), (1221, 17457), (1587, 13431), (2277, 9361), (2553, 8349), (2783, 7659), (3663, 5819), (4477, 4761)]