21275030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{619}}^1$

素因数の和:1124

約数の個数: 32

約数和(自身を含む): 43925760

約数和(自身を除く): 22650730

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 491, 619, 982, 1238, 2455, 3095, 3437, 4333, 4910, 6190, 6874, 8666, 17185, 21665, 34370, 43330, 303929, 607858, 1519645, 2127503, 3039290, 4255006, 10637515, 21275030]

約数ペア:

[(1, 21275030), (2, 10637515), (5, 4255006), (7, 3039290), (10, 2127503), (14, 1519645), (35, 607858), (70, 303929), (491, 43330), (619, 34370), (982, 21665), (1238, 17185), (2455, 8666), (3095, 6874), (3437, 6190), (4333, 4910)]