28661493

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 45342720

約数和(自身を除く): 16681227

約数列:

[1, 3, 7, 21, 47, 71, 141, 213, 329, 409, 497, 987, 1227, 1491, 2863, 3337, 8589, 10011, 19223, 23359, 29039, 57669, 70077, 87117, 134561, 203273, 403683, 609819, 1364833, 4094499, 9553831, 28661493]

約数ペア:

[(1, 28661493), (3, 9553831), (7, 4094499), (21, 1364833), (47, 609819), (71, 403683), (141, 203273), (213, 134561), (329, 87117), (409, 70077), (497, 57669), (987, 29039), (1227, 23359), (1491, 19223), (2863, 10011), (3337, 8589)]