19157680

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2371}}^1$

素因数の和:2485

約数の個数: 40

約数和(自身を含む): 45001584

約数和(自身を除く): 25843904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2371, 4040, 4742, 8080, 9484, 11855, 18968, 23710, 37936, 47420, 94840, 189680, 239471, 478942, 957884, 1197355, 1915768, 2394710, 3831536, 4789420, 9578840, 19157680]

約数ペア:

[(1, 19157680), (2, 9578840), (4, 4789420), (5, 3831536), (8, 2394710), (10, 1915768), (16, 1197355), (20, 957884), (40, 478942), (80, 239471), (101, 189680), (202, 94840), (404, 47420), (505, 37936), (808, 23710), (1010, 18968), (1616, 11855), (2020, 9484), (2371, 8080), (4040, 4742)]