19903767

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 29976576

約数和(自身を除く): 10072809

約数列:

[1, 3, 13, 31, 39, 93, 101, 163, 303, 403, 489, 1209, 1313, 2119, 3131, 3939, 5053, 6357, 9393, 15159, 16463, 40703, 49389, 65689, 122109, 197067, 214019, 510353, 642057, 1531059, 6634589, 19903767]

約数ペア:

[(1, 19903767), (3, 6634589), (13, 1531059), (31, 642057), (39, 510353), (93, 214019), (101, 197067), (163, 122109), (303, 65689), (403, 49389), (489, 40703), (1209, 16463), (1313, 15159), (2119, 9393), (3131, 6357), (3939, 5053)]