21214060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21647}}^1$

素因数の和:21670

約数の個数: 36

約数和(自身を含む): 51825312

約数和(自身を除く): 30611252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21647, 43294, 86588, 108235, 151529, 216470, 303058, 432940, 606116, 757645, 1060703, 1515290, 2121406, 3030580, 4242812, 5303515, 10607030, 21214060]

約数ペア:

[(1, 21214060), (2, 10607030), (4, 5303515), (5, 4242812), (7, 3030580), (10, 2121406), (14, 1515290), (20, 1060703), (28, 757645), (35, 606116), (49, 432940), (70, 303058), (98, 216470), (140, 151529), (196, 108235), (245, 86588), (490, 43294), (980, 21647)]