21383875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:408

約数の個数: 32

約数和(自身を含む): 29315520

約数和(自身を除く): 7931645

約数列:

[1, 5, 17, 25, 29, 85, 125, 145, 347, 425, 493, 725, 1735, 2125, 2465, 3625, 5899, 8675, 10063, 12325, 29495, 43375, 50315, 61625, 147475, 171071, 251575, 737375, 855355, 1257875, 4276775, 21383875]

約数ペア:

[(1, 21383875), (5, 4276775), (17, 1257875), (25, 855355), (29, 737375), (85, 251575), (125, 171071), (145, 147475), (347, 61625), (425, 50315), (493, 43375), (725, 29495), (1735, 12325), (2125, 10063), (2465, 8675), (3625, 5899)]