19628398640

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{487}}^1\times {\mathrm{3967}}^1$

素因数の和:4594

約数の個数: 80

約数和(自身を含む): 46101430272

約数和(自身を除く): 26473031632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 487, 508, 635, 974, 1016, 1270, 1948, 2032, 2435, 2540, 3896, 3967, 4870, 5080, 7792, 7934, 9740, 10160, 15868, 19480, 19835, 31736, 38960, 39670, 61849, 63472, 79340, 123698, 158680, 247396, 309245, 317360, 494792, 503809, 618490, 989584, 1007618, 1236980, 1931929, 2015236, 2473960, 2519045, 3863858, 4030472, 4947920, 5038090, 7727716, 8060944, 9659645, 10076180, 15455432, 19319290, 20152360, 30910864, 38638580, 40304720, 77277160, 154554320, 245354983, 490709966, 981419932, 1226774915, 1962839864, 2453549830, 3925679728, 4907099660, 9814199320, 19628398640]

約数ペア:

[(1, 19628398640), (2, 9814199320), (4, 4907099660), (5, 3925679728), (8, 2453549830), (10, 1962839864), (16, 1226774915), (20, 981419932), (40, 490709966), (80, 245354983), (127, 154554320), (254, 77277160), (487, 40304720), (508, 38638580), (635, 30910864), (974, 20152360), (1016, 19319290), (1270, 15455432), (1948, 10076180), (2032, 9659645), (2435, 8060944), (2540, 7727716), (3896, 5038090), (3967, 4947920), (4870, 4030472), (5080, 3863858), (7792, 2519045), (7934, 2473960), (9740, 2015236), (10160, 1931929), (15868, 1236980), (19480, 1007618), (19835, 989584), (31736, 618490), (38960, 503809), (39670, 494792), (61849, 317360), (63472, 309245), (79340, 247396), (123698, 158680)]