15784780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{457}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 36471456

約数和(自身を除く): 20686676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 457, 628, 785, 914, 1570, 1727, 1828, 2285, 3140, 3454, 4570, 5027, 6908, 8635, 9140, 10054, 17270, 20108, 25135, 34540, 50270, 71749, 100540, 143498, 286996, 358745, 717490, 789239, 1434980, 1578478, 3156956, 3946195, 7892390, 15784780]

約数ペア:

[(1, 15784780), (2, 7892390), (4, 3946195), (5, 3156956), (10, 1578478), (11, 1434980), (20, 789239), (22, 717490), (44, 358745), (55, 286996), (110, 143498), (157, 100540), (220, 71749), (314, 50270), (457, 34540), (628, 25135), (785, 20108), (914, 17270), (1570, 10054), (1727, 9140), (1828, 8635), (2285, 6908), (3140, 5027), (3454, 4570)]