28890141

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 45474048

約数和(自身を除く): 16583907

約数列:

[1, 3, 7, 21, 53, 101, 159, 257, 303, 371, 707, 771, 1113, 1799, 2121, 5353, 5397, 13621, 16059, 25957, 37471, 40863, 77871, 95347, 112413, 181699, 286041, 545097, 1375721, 4127163, 9630047, 28890141]

約数ペア:

[(1, 28890141), (3, 9630047), (7, 4127163), (21, 1375721), (53, 545097), (101, 286041), (159, 181699), (257, 112413), (303, 95347), (371, 77871), (707, 40863), (771, 37471), (1113, 25957), (1799, 16059), (2121, 13621), (5353, 5397)]