7921575

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 15958800

約数和(自身を除く): 8037225

約数列:

[1, 3, 5, 9, 15, 17, 19, 25, 45, 51, 57, 75, 85, 95, 109, 153, 171, 225, 255, 285, 323, 327, 425, 475, 545, 765, 855, 969, 981, 1275, 1425, 1615, 1635, 1853, 2071, 2725, 2907, 3825, 4275, 4845, 4905, 5559, 6213, 8075, 8175, 9265, 10355, 14535, 16677, 18639, 24225, 24525, 27795, 31065, 35207, 46325, 51775, 72675, 83385, 93195, 105621, 138975, 155325, 176035, 316863, 416925, 465975, 528105, 880175, 1584315, 2640525, 7921575]

約数ペア:

[(1, 7921575), (3, 2640525), (5, 1584315), (9, 880175), (15, 528105), (17, 465975), (19, 416925), (25, 316863), (45, 176035), (51, 155325), (57, 138975), (75, 105621), (85, 93195), (95, 83385), (109, 72675), (153, 51775), (171, 46325), (225, 35207), (255, 31065), (285, 27795), (323, 24525), (327, 24225), (425, 18639), (475, 16677), (545, 14535), (765, 10355), (855, 9265), (969, 8175), (981, 8075), (1275, 6213), (1425, 5559), (1615, 4905), (1635, 4845), (1853, 4275), (2071, 3825), (2725, 2907)]