21248475

素因数分解:

$3^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{3881}}^1$

素因数の和:3967

約数の個数: 24

約数和(自身を含む): 35621232

約数和(自身を除く): 14372757

約数列:

[1, 3, 5, 15, 25, 73, 75, 219, 365, 1095, 1825, 3881, 5475, 11643, 19405, 58215, 97025, 283313, 291075, 849939, 1416565, 4249695, 7082825, 21248475]

約数ペア:

[(1, 21248475), (3, 7082825), (5, 4249695), (15, 1416565), (25, 849939), (73, 291075), (75, 283313), (219, 97025), (365, 58215), (1095, 19405), (1825, 11643), (3881, 5475)]