12987780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{16651}}^1$

素因数の和:16676

約数の個数: 48

約数和(自身を含む): 39165504

約数和(自身を除く): 26177724

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 16651, 33302, 49953, 66604, 83255, 99906, 166510, 199812, 216463, 249765, 333020, 432926, 499530, 649389, 865852, 999060, 1082315, 1298778, 2164630, 2597556, 3246945, 4329260, 6493890, 12987780]

約数ペア:

[(1, 12987780), (2, 6493890), (3, 4329260), (4, 3246945), (5, 2597556), (6, 2164630), (10, 1298778), (12, 1082315), (13, 999060), (15, 865852), (20, 649389), (26, 499530), (30, 432926), (39, 333020), (52, 249765), (60, 216463), (65, 199812), (78, 166510), (130, 99906), (156, 83255), (195, 66604), (260, 49953), (390, 33302), (780, 16651)]