21570290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{44021}}^1$

素因数の和:44042

約数の個数: 24

約数和(自身を含む): 45166572

約数和(自身を除く): 23596282

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 44021, 88042, 220105, 308147, 440210, 616294, 1540735, 2157029, 3081470, 4314058, 10785145, 21570290]

約数ペア:

[(1, 21570290), (2, 10785145), (5, 4314058), (7, 3081470), (10, 2157029), (14, 1540735), (35, 616294), (49, 440210), (70, 308147), (98, 220105), (245, 88042), (490, 44021)]