21018021290

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{6127703}}^1$

素因数の和:6127731

約数の個数: 32

約数和(自身を含む): 44119468800

約数和(自身を除く): 23101447510

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 6127703, 12255406, 30638515, 42893921, 61277030, 85787842, 214469605, 300257447, 428939210, 600514894, 1501287235, 2101802129, 3002574470, 4203604258, 10509010645, 21018021290]

約数ペア:

[(1, 21018021290), (2, 10509010645), (5, 4203604258), (7, 3002574470), (10, 2101802129), (14, 1501287235), (35, 600514894), (49, 428939210), (70, 300257447), (98, 214469605), (245, 85787842), (343, 61277030), (490, 42893921), (686, 30638515), (1715, 12255406), (3430, 6127703)]