20778888560

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6335027}}^1$

素因数の和:6335081

約数の個数: 40

約数和(自身を含む): 49489238736

約数和(自身を除く): 28710350176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6335027, 12670054, 25340108, 31675135, 50680216, 63350270, 101360432, 126700540, 253401080, 259736107, 506802160, 519472214, 1038944428, 1298680535, 2077888856, 2597361070, 4155777712, 5194722140, 10389444280, 20778888560]

約数ペア:

[(1, 20778888560), (2, 10389444280), (4, 5194722140), (5, 4155777712), (8, 2597361070), (10, 2077888856), (16, 1298680535), (20, 1038944428), (40, 519472214), (41, 506802160), (80, 259736107), (82, 253401080), (164, 126700540), (205, 101360432), (328, 63350270), (410, 50680216), (656, 31675135), (820, 25340108), (1640, 12670054), (3280, 6335027)]