21000201628

素因数分解:

$2^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1021}}^1\times {\mathrm{7573}}^1$

素因数の和:8702

約数の個数: 48

約数和(自身を含む): 42480566464

約数和(自身を除く): 21480364836

約数列:

[1, 2, 4, 7, 14, 28, 97, 194, 388, 679, 1021, 1358, 2042, 2716, 4084, 7147, 7573, 14294, 15146, 28588, 30292, 53011, 99037, 106022, 198074, 212044, 396148, 693259, 734581, 1386518, 1469162, 2773036, 2938324, 5142067, 7732033, 10284134, 15464066, 20568268, 30928132, 54124231, 108248462, 216496924, 750007201, 1500014402, 3000028804, 5250050407, 10500100814, 21000201628]

約数ペア:

[(1, 21000201628), (2, 10500100814), (4, 5250050407), (7, 3000028804), (14, 1500014402), (28, 750007201), (97, 216496924), (194, 108248462), (388, 54124231), (679, 30928132), (1021, 20568268), (1358, 15464066), (2042, 10284134), (2716, 7732033), (4084, 5142067), (7147, 2938324), (7573, 2773036), (14294, 1469162), (15146, 1386518), (28588, 734581), (30292, 693259), (53011, 396148), (99037, 212044), (106022, 198074)]