291265316

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 538876800

約数和(自身を除く): 247611484

約数列:

[1, 2, 4, 43, 53, 86, 89, 106, 172, 178, 212, 356, 359, 718, 1436, 2279, 3827, 4558, 4717, 7654, 9116, 9434, 15308, 15437, 18868, 19027, 30874, 31951, 38054, 61748, 63902, 76108, 127804, 202831, 405662, 811324, 818161, 1373893, 1636322, 1693403, 2747786, 3272644, 3386806, 5495572, 6773612, 72816329, 145632658, 291265316]

約数ペア:

[(1, 291265316), (2, 145632658), (4, 72816329), (43, 6773612), (53, 5495572), (86, 3386806), (89, 3272644), (106, 2747786), (172, 1693403), (178, 1636322), (212, 1373893), (356, 818161), (359, 811324), (718, 405662), (1436, 202831), (2279, 127804), (3827, 76108), (4558, 63902), (4717, 61748), (7654, 38054), (9116, 31951), (9434, 30874), (15308, 19027), (15437, 18868)]