640001908

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1758247}}^1$

素因数の和:1758271

約数の個数: 24

約数和(自身を含む): 1378466432

約数和(自身を除く): 738464524

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 1758247, 3516494, 7032988, 12307729, 22857211, 24615458, 45714422, 49230916, 91428844, 160000477, 320000954, 640001908]

約数ペア:

[(1, 640001908), (2, 320000954), (4, 160000477), (7, 91428844), (13, 49230916), (14, 45714422), (26, 24615458), (28, 22857211), (52, 12307729), (91, 7032988), (182, 3516494), (364, 1758247)]