21908978

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{593}}^1$

素因数の和:651

約数の個数: 48

約数和(自身を含む): 42661080

約数和(自身を除く): 20752102

約数列:

[1, 2, 7, 13, 14, 26, 29, 49, 58, 91, 98, 182, 203, 377, 406, 593, 637, 754, 1186, 1274, 1421, 2639, 2842, 4151, 5278, 7709, 8302, 15418, 17197, 18473, 29057, 34394, 36946, 53963, 58114, 107926, 120379, 223561, 240758, 377741, 447122, 755482, 842653, 1564927, 1685306, 3129854, 10954489, 21908978]

約数ペア:

[(1, 21908978), (2, 10954489), (7, 3129854), (13, 1685306), (14, 1564927), (26, 842653), (29, 755482), (49, 447122), (58, 377741), (91, 240758), (98, 223561), (182, 120379), (203, 107926), (377, 58114), (406, 53963), (593, 36946), (637, 34394), (754, 29057), (1186, 18473), (1274, 17197), (1421, 15418), (2639, 8302), (2842, 7709), (4151, 5278)]