640692872

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{151967}}^1$

素因数の和:152021

約数の個数: 32

約数和(自身を含む): 1313003520

約数和(自身を除く): 672310648

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 151967, 303934, 607868, 1215736, 2583439, 4710977, 5166878, 9421954, 10333756, 18843908, 20667512, 37687816, 80086609, 160173218, 320346436, 640692872]

約数ペア:

[(1, 640692872), (2, 320346436), (4, 160173218), (8, 80086609), (17, 37687816), (31, 20667512), (34, 18843908), (62, 10333756), (68, 9421954), (124, 5166878), (136, 4710977), (248, 2583439), (527, 1215736), (1054, 607868), (2108, 303934), (4216, 151967)]