21256716

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{136261}}^1$

素因数の和:136281

約数の個数: 24

約数和(自身を含む): 53414704

約数和(自身を除く): 32157988

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 136261, 272522, 408783, 545044, 817566, 1635132, 1771393, 3542786, 5314179, 7085572, 10628358, 21256716]

約数ペア:

[(1, 21256716), (2, 10628358), (3, 7085572), (4, 5314179), (6, 3542786), (12, 1771393), (13, 1635132), (26, 817566), (39, 545044), (52, 408783), (78, 272522), (156, 136261)]