21152776

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{317}}^1\times {\mathrm{439}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 41976000

約数和(自身を除く): 20823224

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 317, 439, 634, 878, 1268, 1756, 2536, 3512, 6023, 8341, 12046, 16682, 24092, 33364, 48184, 66728, 139163, 278326, 556652, 1113304, 2644097, 5288194, 10576388, 21152776]

約数ペア:

[(1, 21152776), (2, 10576388), (4, 5288194), (8, 2644097), (19, 1113304), (38, 556652), (76, 278326), (152, 139163), (317, 66728), (439, 48184), (634, 33364), (878, 24092), (1268, 16682), (1756, 12046), (2536, 8341), (3512, 6023)]