19961875

素因数分解:

$5^4\times {\mathrm{19}}^1\times {\mathrm{41}}^2$

素因数の和:121

約数の個数: 30

約数和(自身を含む): 26913260

約数和(自身を除く): 6951385

約数列:

[1, 5, 19, 25, 41, 95, 125, 205, 475, 625, 779, 1025, 1681, 2375, 3895, 5125, 8405, 11875, 19475, 25625, 31939, 42025, 97375, 159695, 210125, 486875, 798475, 1050625, 3992375, 19961875]

約数ペア:

[(1, 19961875), (5, 3992375), (19, 1050625), (25, 798475), (41, 486875), (95, 210125), (125, 159695), (205, 97375), (475, 42025), (625, 31939), (779, 25625), (1025, 19475), (1681, 11875), (2375, 8405), (3895, 5125)]