21326536

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 50544000

約数和(自身を除く): 29217464

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 89, 154, 178, 308, 356, 389, 616, 623, 712, 778, 979, 1246, 1556, 1958, 2492, 2723, 3112, 3916, 4279, 4984, 5446, 6853, 7832, 8558, 10892, 13706, 17116, 21784, 27412, 29953, 34232, 34621, 54824, 59906, 69242, 119812, 138484, 239624, 242347, 276968, 380831, 484694, 761662, 969388, 1523324, 1938776, 2665817, 3046648, 5331634, 10663268, 21326536]

約数ペア:

[(1, 21326536), (2, 10663268), (4, 5331634), (7, 3046648), (8, 2665817), (11, 1938776), (14, 1523324), (22, 969388), (28, 761662), (44, 484694), (56, 380831), (77, 276968), (88, 242347), (89, 239624), (154, 138484), (178, 119812), (308, 69242), (356, 59906), (389, 54824), (616, 34621), (623, 34232), (712, 29953), (778, 27412), (979, 21784), (1246, 17116), (1556, 13706), (1958, 10892), (2492, 8558), (2723, 7832), (3112, 6853), (3916, 5446), (4279, 4984)]