21908601

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{587}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 38525760

約数和(自身を除く): 16617159

約数列:

[1, 3, 9, 11, 13, 29, 33, 39, 87, 99, 117, 143, 261, 319, 377, 429, 587, 957, 1131, 1287, 1761, 2871, 3393, 4147, 5283, 6457, 7631, 12441, 17023, 19371, 22893, 37323, 51069, 58113, 68679, 83941, 153207, 187253, 221299, 251823, 561759, 663897, 755469, 1685277, 1991691, 2434289, 7302867, 21908601]

約数ペア:

[(1, 21908601), (3, 7302867), (9, 2434289), (11, 1991691), (13, 1685277), (29, 755469), (33, 663897), (39, 561759), (87, 251823), (99, 221299), (117, 187253), (143, 153207), (261, 83941), (319, 68679), (377, 58113), (429, 51069), (587, 37323), (957, 22893), (1131, 19371), (1287, 17023), (1761, 12441), (2871, 7631), (3393, 6457), (4147, 5283)]