21145709

素因数分解:

${\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{409}}^1$

素因数の和:560

約数の個数: 16

約数和(自身を含む): 23625840

約数和(自身を除く): 2480131

約数列:

[1, 13, 41, 97, 409, 533, 1261, 3977, 5317, 16769, 39673, 51701, 217997, 515749, 1626593, 21145709]

約数ペア:

[(1, 21145709), (13, 1626593), (41, 515749), (97, 217997), (409, 51701), (533, 39673), (1261, 16769), (3977, 5317)]