19319740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{641}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 44652384

約数和(自身を除く): 25332644

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 137, 220, 274, 548, 641, 685, 1282, 1370, 1507, 2564, 2740, 3014, 3205, 6028, 6410, 7051, 7535, 12820, 14102, 15070, 28204, 30140, 35255, 70510, 87817, 141020, 175634, 351268, 439085, 878170, 965987, 1756340, 1931974, 3863948, 4829935, 9659870, 19319740]

約数ペア:

[(1, 19319740), (2, 9659870), (4, 4829935), (5, 3863948), (10, 1931974), (11, 1756340), (20, 965987), (22, 878170), (44, 439085), (55, 351268), (110, 175634), (137, 141020), (220, 87817), (274, 70510), (548, 35255), (641, 30140), (685, 28204), (1282, 15070), (1370, 14102), (1507, 12820), (2564, 7535), (2740, 7051), (3014, 6410), (3205, 6028)]