19210780

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 41803776

約数和(自身を除く): 22592996

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 107, 188, 191, 214, 235, 382, 428, 470, 535, 764, 940, 955, 1070, 1910, 2140, 3820, 5029, 8977, 10058, 17954, 20116, 20437, 25145, 35908, 40874, 44885, 50290, 81748, 89770, 100580, 102185, 179540, 204370, 408740, 960539, 1921078, 3842156, 4802695, 9605390, 19210780]

約数ペア:

[(1, 19210780), (2, 9605390), (4, 4802695), (5, 3842156), (10, 1921078), (20, 960539), (47, 408740), (94, 204370), (107, 179540), (188, 102185), (191, 100580), (214, 89770), (235, 81748), (382, 50290), (428, 44885), (470, 40874), (535, 35908), (764, 25145), (940, 20437), (955, 20116), (1070, 17954), (1910, 10058), (2140, 8977), (3820, 5029)]