15808821

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 26123328

約数和(自身を除く): 10314507

約数列:

[1, 3, 7, 21, 41, 43, 49, 61, 123, 129, 147, 183, 287, 301, 427, 861, 903, 1281, 1763, 2009, 2107, 2501, 2623, 2989, 5289, 6027, 6321, 7503, 7869, 8967, 12341, 17507, 18361, 37023, 52521, 55083, 86387, 107543, 122549, 128527, 259161, 322629, 367647, 385581, 752801, 2258403, 5269607, 15808821]

約数ペア:

[(1, 15808821), (3, 5269607), (7, 2258403), (21, 752801), (41, 385581), (43, 367647), (49, 322629), (61, 259161), (123, 128527), (129, 122549), (147, 107543), (183, 86387), (287, 55083), (301, 52521), (427, 37023), (861, 18361), (903, 17507), (1281, 12341), (1763, 8967), (2009, 7869), (2107, 7503), (2501, 6321), (2623, 6027), (2989, 5289)]