21013180

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3739}}^1$

素因数の和:4029

約数の個数: 24

約数和(自身を含む): 44296560

約数和(自身を除く): 23283380

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3739, 5620, 7478, 14956, 18695, 37390, 74780, 1050659, 2101318, 4202636, 5253295, 10506590, 21013180]

約数ペア:

[(1, 21013180), (2, 10506590), (4, 5253295), (5, 4202636), (10, 2101318), (20, 1050659), (281, 74780), (562, 37390), (1124, 18695), (1405, 14956), (2810, 7478), (3739, 5620)]