19139780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{719}}^1$

素因数の和:761

約数の個数: 48

約数和(自身を含む): 44271360

約数和(自身を除く): 25131580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 719, 1210, 1331, 1438, 2420, 2662, 2876, 3595, 5324, 6655, 7190, 7909, 13310, 14380, 15818, 26620, 31636, 39545, 79090, 86999, 158180, 173998, 347996, 434995, 869990, 956989, 1739980, 1913978, 3827956, 4784945, 9569890, 19139780]

約数ペア:

[(1, 19139780), (2, 9569890), (4, 4784945), (5, 3827956), (10, 1913978), (11, 1739980), (20, 956989), (22, 869990), (44, 434995), (55, 347996), (110, 173998), (121, 158180), (220, 86999), (242, 79090), (484, 39545), (605, 31636), (719, 26620), (1210, 15818), (1331, 14380), (1438, 13310), (2420, 7909), (2662, 7190), (2876, 6655), (3595, 5324)]