20499778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{1619}}^1$

素因数の和:2121

約数の個数: 16

約数和(自身を含む): 33203520

約数和(自身を除く): 12703742

約数列:

[1, 2, 13, 26, 487, 974, 1619, 3238, 6331, 12662, 21047, 42094, 788453, 1576906, 10249889, 20499778]

約数ペア:

[(1, 20499778), (2, 10249889), (13, 1576906), (26, 788453), (487, 42094), (974, 21047), (1619, 12662), (3238, 6331)]