21494187

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{293}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 39513600

約数和(自身を除く): 18019413

約数列:

[1, 3, 9, 11, 13, 19, 27, 33, 39, 57, 99, 117, 143, 171, 209, 247, 293, 297, 351, 429, 513, 627, 741, 879, 1287, 1881, 2223, 2637, 2717, 3223, 3809, 3861, 5567, 5643, 6669, 7911, 8151, 9669, 11427, 16701, 24453, 29007, 34281, 41899, 50103, 61237, 72371, 73359, 87021, 102843, 125697, 150309, 183711, 217113, 377091, 551133, 651339, 796081, 1131273, 1653399, 1954017, 2388243, 7164729, 21494187]

約数ペア:

[(1, 21494187), (3, 7164729), (9, 2388243), (11, 1954017), (13, 1653399), (19, 1131273), (27, 796081), (33, 651339), (39, 551133), (57, 377091), (99, 217113), (117, 183711), (143, 150309), (171, 125697), (209, 102843), (247, 87021), (293, 73359), (297, 72371), (351, 61237), (429, 50103), (513, 41899), (627, 34281), (741, 29007), (879, 24453), (1287, 16701), (1881, 11427), (2223, 9669), (2637, 8151), (2717, 7911), (3223, 6669), (3809, 5643), (3861, 5567)]