21327845

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1787}}^1$

素因数の和:1841

約数の個数: 32

約数和(自身を含む): 32956416

約数和(自身を除く): 11628571

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 1787, 2387, 8935, 11935, 12509, 19657, 55397, 62545, 98285, 137599, 276985, 387779, 609367, 687995, 1938895, 3046835, 4265569, 21327845]

約数ペア:

[(1, 21327845), (5, 4265569), (7, 3046835), (11, 1938895), (31, 687995), (35, 609367), (55, 387779), (77, 276985), (155, 137599), (217, 98285), (341, 62545), (385, 55397), (1085, 19657), (1705, 12509), (1787, 11935), (2387, 8935)]