21581210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{308303}}^1$

素因数の和:308317

約数の個数: 16

約数和(自身を含む): 44395776

約数和(自身を除く): 22814566

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 308303, 616606, 1541515, 2158121, 3083030, 4316242, 10790605, 21581210]

約数ペア:

[(1, 21581210), (2, 10790605), (5, 4316242), (7, 3083030), (10, 2158121), (14, 1541515), (35, 616606), (70, 308303)]