21453460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{523}}^1$

素因数の和:832

約数の個数: 48

約数和(自身を含む): 51762816

約数和(自身を除く): 30309356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 293, 523, 586, 1046, 1172, 1465, 2051, 2092, 2615, 2930, 3661, 4102, 5230, 5860, 7322, 8204, 10255, 10460, 14644, 18305, 20510, 36610, 41020, 73220, 153239, 306478, 612956, 766195, 1072673, 1532390, 2145346, 3064780, 4290692, 5363365, 10726730, 21453460]

約数ペア:

[(1, 21453460), (2, 10726730), (4, 5363365), (5, 4290692), (7, 3064780), (10, 2145346), (14, 1532390), (20, 1072673), (28, 766195), (35, 612956), (70, 306478), (140, 153239), (293, 73220), (523, 41020), (586, 36610), (1046, 20510), (1172, 18305), (1465, 14644), (2051, 10460), (2092, 10255), (2615, 8204), (2930, 7322), (3661, 5860), (4102, 5230)]