21755097

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 39207168

約数和(自身を除く): 17452071

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 101, 117, 263, 273, 303, 707, 789, 819, 909, 1313, 1841, 2121, 2367, 3419, 3939, 5523, 6363, 9191, 10257, 11817, 16569, 23933, 26563, 27573, 30771, 71799, 79689, 82719, 185941, 215397, 239067, 345319, 557823, 1035957, 1673469, 2417233, 3107871, 7251699, 21755097]

約数ペア:

[(1, 21755097), (3, 7251699), (7, 3107871), (9, 2417233), (13, 1673469), (21, 1035957), (39, 557823), (63, 345319), (91, 239067), (101, 215397), (117, 185941), (263, 82719), (273, 79689), (303, 71799), (707, 30771), (789, 27573), (819, 26563), (909, 23933), (1313, 16569), (1841, 11817), (2121, 10257), (2367, 9191), (3419, 6363), (3939, 5523)]