19942480

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3511}}^1$

素因数の和:3595

約数の個数: 40

約数和(自身を含む): 47032704

約数和(自身を除く): 27090224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3511, 5680, 7022, 14044, 17555, 28088, 35110, 56176, 70220, 140440, 249281, 280880, 498562, 997124, 1246405, 1994248, 2492810, 3988496, 4985620, 9971240, 19942480]

約数ペア:

[(1, 19942480), (2, 9971240), (4, 4985620), (5, 3988496), (8, 2492810), (10, 1994248), (16, 1246405), (20, 997124), (40, 498562), (71, 280880), (80, 249281), (142, 140440), (284, 70220), (355, 56176), (568, 35110), (710, 28088), (1136, 17555), (1420, 14044), (2840, 7022), (3511, 5680)]