19816810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 21551510

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 71, 95, 113, 130, 142, 190, 226, 247, 355, 494, 565, 710, 923, 1130, 1235, 1349, 1469, 1846, 2147, 2470, 2698, 2938, 4294, 4615, 6745, 7345, 8023, 9230, 10735, 13490, 14690, 16046, 17537, 21470, 27911, 35074, 40115, 55822, 80230, 87685, 104299, 139555, 152437, 175370, 208598, 279110, 304874, 521495, 762185, 1042990, 1524370, 1981681, 3963362, 9908405, 19816810]

約数ペア:

[(1, 19816810), (2, 9908405), (5, 3963362), (10, 1981681), (13, 1524370), (19, 1042990), (26, 762185), (38, 521495), (65, 304874), (71, 279110), (95, 208598), (113, 175370), (130, 152437), (142, 139555), (190, 104299), (226, 87685), (247, 80230), (355, 55822), (494, 40115), (565, 35074), (710, 27911), (923, 21470), (1130, 17537), (1235, 16046), (1349, 14690), (1469, 13490), (1846, 10735), (2147, 9230), (2470, 8023), (2698, 7345), (2938, 6745), (4294, 4615)]