19925125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 27840384

約数和(自身を除く): 7915259

約数列:

[1, 5, 11, 25, 43, 55, 125, 215, 275, 337, 473, 1075, 1375, 1685, 2365, 3707, 5375, 8425, 11825, 14491, 18535, 42125, 59125, 72455, 92675, 159401, 362275, 463375, 797005, 1811375, 3985025, 19925125]

約数ペア:

[(1, 19925125), (5, 3985025), (11, 1811375), (25, 797005), (43, 463375), (55, 362275), (125, 159401), (215, 92675), (275, 72455), (337, 59125), (473, 42125), (1075, 18535), (1375, 14491), (1685, 11825), (2365, 8425), (3707, 5375)]