28185690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72271}}^1$

素因数の和:72294

約数の個数: 32

約数和(自身を含む): 72850176

約数和(自身を除く): 44664486

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 72271, 144542, 216813, 361355, 433626, 722710, 939523, 1084065, 1879046, 2168130, 2818569, 4697615, 5637138, 9395230, 14092845, 28185690]

約数ペア:

[(1, 28185690), (2, 14092845), (3, 9395230), (5, 5637138), (6, 4697615), (10, 2818569), (13, 2168130), (15, 1879046), (26, 1084065), (30, 939523), (39, 722710), (65, 433626), (78, 361355), (130, 216813), (195, 144542), (390, 72271)]