21400670

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:524

約数の個数: 32

約数和(自身を含む): 39793248

約数和(自身を除く): 18392578

約数列:

[1, 2, 5, 10, 43, 86, 157, 215, 314, 317, 430, 634, 785, 1570, 1585, 3170, 6751, 13502, 13631, 27262, 33755, 49769, 67510, 68155, 99538, 136310, 248845, 497690, 2140067, 4280134, 10700335, 21400670]

約数ペア:

[(1, 21400670), (2, 10700335), (5, 4280134), (10, 2140067), (43, 497690), (86, 248845), (157, 136310), (215, 99538), (314, 68155), (317, 67510), (430, 49769), (634, 33755), (785, 27262), (1570, 13631), (1585, 13502), (3170, 6751)]