1640790820

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1\times {\mathrm{2383}}^1$

素因数の和:2764

約数の個数: 48

約数和(自身を含む): 3484454400

約数和(自身を除く): 1843663580

約数列:

[1, 2, 4, 5, 10, 20, 173, 199, 346, 398, 692, 796, 865, 995, 1730, 1990, 2383, 3460, 3980, 4766, 9532, 11915, 23830, 34427, 47660, 68854, 137708, 172135, 344270, 412259, 474217, 688540, 824518, 948434, 1649036, 1896868, 2061295, 2371085, 4122590, 4742170, 8245180, 9484340, 82039541, 164079082, 328158164, 410197705, 820395410, 1640790820]

約数ペア:

[(1, 1640790820), (2, 820395410), (4, 410197705), (5, 328158164), (10, 164079082), (20, 82039541), (173, 9484340), (199, 8245180), (346, 4742170), (398, 4122590), (692, 2371085), (796, 2061295), (865, 1896868), (995, 1649036), (1730, 948434), (1990, 824518), (2383, 688540), (3460, 474217), (3980, 412259), (4766, 344270), (9532, 172135), (11915, 137708), (23830, 68854), (34427, 47660)]