18104961

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 30205440

約数和(自身を除く): 12100479

約数列:

[1, 3, 7, 21, 29, 31, 49, 87, 93, 137, 147, 203, 217, 411, 609, 651, 899, 959, 1421, 1519, 2697, 2877, 3973, 4247, 4263, 4557, 6293, 6713, 11919, 12741, 18879, 20139, 27811, 29729, 44051, 83433, 89187, 123163, 132153, 194677, 208103, 369489, 584031, 624309, 862141, 2586423, 6034987, 18104961]

約数ペア:

[(1, 18104961), (3, 6034987), (7, 2586423), (21, 862141), (29, 624309), (31, 584031), (49, 369489), (87, 208103), (93, 194677), (137, 132153), (147, 123163), (203, 89187), (217, 83433), (411, 44051), (609, 29729), (651, 27811), (899, 20139), (959, 18879), (1421, 12741), (1519, 11919), (2697, 6713), (2877, 6293), (3973, 4557), (4247, 4263)]