21092643

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 37180416

約数和(自身を除く): 16087773

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 143, 243, 297, 351, 429, 607, 891, 1053, 1287, 1821, 2673, 3159, 3861, 5463, 6677, 7891, 11583, 16389, 20031, 23673, 34749, 49167, 60093, 71019, 86801, 147501, 180279, 213057, 260403, 540837, 639171, 781209, 1622511, 1917513, 2343627, 7030881, 21092643]

約数ペア:

[(1, 21092643), (3, 7030881), (9, 2343627), (11, 1917513), (13, 1622511), (27, 781209), (33, 639171), (39, 540837), (81, 260403), (99, 213057), (117, 180279), (143, 147501), (243, 86801), (297, 71019), (351, 60093), (429, 49167), (607, 34749), (891, 23673), (1053, 20031), (1287, 16389), (1821, 11583), (2673, 7891), (3159, 6677), (3861, 5463)]