21052070

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2417}}^1$

素因数の和:2504

約数の個数: 32

約数和(自身を含む): 41434848

約数和(自身を除く): 20382778

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 335, 670, 871, 1742, 2417, 4355, 4834, 8710, 12085, 24170, 31421, 62842, 157105, 161939, 314210, 323878, 809695, 1619390, 2105207, 4210414, 10526035, 21052070]

約数ペア:

[(1, 21052070), (2, 10526035), (5, 4210414), (10, 2105207), (13, 1619390), (26, 809695), (65, 323878), (67, 314210), (130, 161939), (134, 157105), (335, 62842), (670, 31421), (871, 24170), (1742, 12085), (2417, 8710), (4355, 4834)]