19663390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 40310784

約数和(自身を除く): 20647394

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 47, 85, 94, 107, 115, 170, 214, 230, 235, 391, 470, 535, 782, 799, 1070, 1081, 1598, 1819, 1955, 2162, 2461, 3638, 3910, 3995, 4922, 5029, 5405, 7990, 9095, 10058, 10810, 12305, 18190, 18377, 24610, 25145, 36754, 41837, 50290, 83674, 85493, 91885, 115667, 170986, 183770, 209185, 231334, 418370, 427465, 578335, 854930, 1156670, 1966339, 3932678, 9831695, 19663390]

約数ペア:

[(1, 19663390), (2, 9831695), (5, 3932678), (10, 1966339), (17, 1156670), (23, 854930), (34, 578335), (46, 427465), (47, 418370), (85, 231334), (94, 209185), (107, 183770), (115, 170986), (170, 115667), (214, 91885), (230, 85493), (235, 83674), (391, 50290), (470, 41837), (535, 36754), (782, 25145), (799, 24610), (1070, 18377), (1081, 18190), (1598, 12305), (1819, 10810), (1955, 10058), (2162, 9095), (2461, 7990), (3638, 5405), (3910, 5029), (3995, 4922)]