19792220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1297}}^1$

素因数の和:1422

約数の個数: 48

約数和(自身を含む): 47974080

約数和(自身を除く): 28181860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1297, 1526, 2180, 2594, 3052, 3815, 5188, 6485, 7630, 9079, 12970, 15260, 18158, 25940, 36316, 45395, 90790, 141373, 181580, 282746, 565492, 706865, 989611, 1413730, 1979222, 2827460, 3958444, 4948055, 9896110, 19792220]

約数ペア:

[(1, 19792220), (2, 9896110), (4, 4948055), (5, 3958444), (7, 2827460), (10, 1979222), (14, 1413730), (20, 989611), (28, 706865), (35, 565492), (70, 282746), (109, 181580), (140, 141373), (218, 90790), (436, 45395), (545, 36316), (763, 25940), (1090, 18158), (1297, 15260), (1526, 12970), (2180, 9079), (2594, 7630), (3052, 6485), (3815, 5188)]