420821890

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{353}}^1\times {\mathrm{1229}}^1$

素因数の和:1686

約数の個数: 32

約数和(自身を含む): 768080880

約数和(自身を除く): 347258990

約数列:

[1, 2, 5, 10, 97, 194, 353, 485, 706, 970, 1229, 1765, 2458, 3530, 6145, 12290, 34241, 68482, 119213, 171205, 238426, 342410, 433837, 596065, 867674, 1192130, 2169185, 4338370, 42082189, 84164378, 210410945, 420821890]

約数ペア:

[(1, 420821890), (2, 210410945), (5, 84164378), (10, 42082189), (97, 4338370), (194, 2169185), (353, 1192130), (485, 867674), (706, 596065), (970, 433837), (1229, 342410), (1765, 238426), (2458, 171205), (3530, 119213), (6145, 68482), (12290, 34241)]