664121432

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{205993}}^1$

素因数の和:206043

約数の個数: 32

約数和(自身を含む): 1384279680

約数和(自身を除く): 720158248

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 205993, 411986, 823972, 1647944, 2677909, 5355818, 6385783, 10711636, 12771566, 21423272, 25543132, 51086264, 83015179, 166030358, 332060716, 664121432]

約数ペア:

[(1, 664121432), (2, 332060716), (4, 166030358), (8, 83015179), (13, 51086264), (26, 25543132), (31, 21423272), (52, 12771566), (62, 10711636), (104, 6385783), (124, 5355818), (248, 2677909), (403, 1647944), (806, 823972), (1612, 411986), (3224, 205993)]