21356775

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8629}}^1$

素因数の和:8656

約数の個数: 36

約数和(自身を含む): 41734680

約数和(自身を除く): 20377905

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8629, 25887, 43145, 77661, 94919, 129435, 215725, 284757, 388305, 474595, 647175, 854271, 1423785, 1941525, 2372975, 4271355, 7118925, 21356775]

約数ペア:

[(1, 21356775), (3, 7118925), (5, 4271355), (9, 2372975), (11, 1941525), (15, 1423785), (25, 854271), (33, 647175), (45, 474595), (55, 388305), (75, 284757), (99, 215725), (165, 129435), (225, 94919), (275, 77661), (495, 43145), (825, 25887), (2475, 8629)]