21000276

素因数分解:

$2^2\times 3^3\times {\mathrm{11}}^2\times {\mathrm{1607}}^1$

素因数の和:1642

約数の個数: 72

約数和(自身を含む): 59881920

約数和(自身を除く): 38881644

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 33, 36, 44, 54, 66, 99, 108, 121, 132, 198, 242, 297, 363, 396, 484, 594, 726, 1089, 1188, 1452, 1607, 2178, 3214, 3267, 4356, 4821, 6428, 6534, 9642, 13068, 14463, 17677, 19284, 28926, 35354, 43389, 53031, 57852, 70708, 86778, 106062, 159093, 173556, 194447, 212124, 318186, 388894, 477279, 583341, 636372, 777788, 954558, 1166682, 1750023, 1909116, 2333364, 3500046, 5250069, 7000092, 10500138, 21000276]

約数ペア:

[(1, 21000276), (2, 10500138), (3, 7000092), (4, 5250069), (6, 3500046), (9, 2333364), (11, 1909116), (12, 1750023), (18, 1166682), (22, 954558), (27, 777788), (33, 636372), (36, 583341), (44, 477279), (54, 388894), (66, 318186), (99, 212124), (108, 194447), (121, 173556), (132, 159093), (198, 106062), (242, 86778), (297, 70708), (363, 57852), (396, 53031), (484, 43389), (594, 35354), (726, 28926), (1089, 19284), (1188, 17677), (1452, 14463), (1607, 13068), (2178, 9642), (3214, 6534), (3267, 6428), (4356, 4821)]