21398055

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{4159}}^1$

素因数の和:4188

約数の個数: 32

約数和(自身を含む): 39936000

約数和(自身を除く): 18537945

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 4159, 5145, 12477, 20795, 29113, 62385, 87339, 145565, 203791, 436695, 611373, 1018955, 1426537, 3056865, 4279611, 7132685, 21398055]

約数ペア:

[(1, 21398055), (3, 7132685), (5, 4279611), (7, 3056865), (15, 1426537), (21, 1018955), (35, 611373), (49, 436695), (105, 203791), (147, 145565), (245, 87339), (343, 62385), (735, 29113), (1029, 20795), (1715, 12477), (4159, 5145)]