21000612310

素因数分解:

$2^1\times 5^1\times {\mathrm{7121}}^1\times {\mathrm{294911}}^1$

素因数の和:302039

約数の個数: 16

約数和(自身を含む): 37806538752

約数和(自身を除く): 16805926442

約数列:

[1, 2, 5, 10, 7121, 14242, 35605, 71210, 294911, 589822, 1474555, 2949110, 2100061231, 4200122462, 10500306155, 21000612310]

約数ペア:

[(1, 21000612310), (2, 10500306155), (5, 4200122462), (10, 2100061231), (7121, 2949110), (14242, 1474555), (35605, 589822), (71210, 294911)]