21000844815

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{394271}}^1$

素因数の和:394399

約数の個数: 32

約数和(自身を含む): 34746402816

約数和(自身を除く): 13745558001

約数列:

[1, 3, 5, 15, 53, 67, 159, 201, 265, 335, 795, 1005, 3551, 10653, 17755, 53265, 394271, 1182813, 1971355, 5914065, 20896363, 26416157, 62689089, 79248471, 104481815, 132080785, 313445445, 396242355, 1400056321, 4200168963, 7000281605, 21000844815]

約数ペア:

[(1, 21000844815), (3, 7000281605), (5, 4200168963), (15, 1400056321), (53, 396242355), (67, 313445445), (159, 132080785), (201, 104481815), (265, 79248471), (335, 62689089), (795, 26416157), (1005, 20896363), (3551, 5914065), (10653, 1971355), (17755, 1182813), (53265, 394271)]