208045575

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{499}}^1$

素因数の和:641

約数の個数: 72

約数和(自身を含む): 398970000

約数和(自身を除く): 190924425

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 109, 153, 225, 255, 327, 425, 499, 545, 765, 981, 1275, 1497, 1635, 1853, 2495, 2725, 3825, 4491, 4905, 5559, 7485, 8175, 8483, 9265, 12475, 16677, 22455, 24525, 25449, 27795, 37425, 42415, 46325, 54391, 76347, 83385, 112275, 127245, 138975, 163173, 212075, 271955, 381735, 416925, 489519, 636225, 815865, 924647, 1359775, 1908675, 2447595, 2773941, 4079325, 4623235, 8321823, 12237975, 13869705, 23116175, 41609115, 69348525, 208045575]

約数ペア:

[(1, 208045575), (3, 69348525), (5, 41609115), (9, 23116175), (15, 13869705), (17, 12237975), (25, 8321823), (45, 4623235), (51, 4079325), (75, 2773941), (85, 2447595), (109, 1908675), (153, 1359775), (225, 924647), (255, 815865), (327, 636225), (425, 489519), (499, 416925), (545, 381735), (765, 271955), (981, 212075), (1275, 163173), (1497, 138975), (1635, 127245), (1853, 112275), (2495, 83385), (2725, 76347), (3825, 54391), (4491, 46325), (4905, 42415), (5559, 37425), (7485, 27795), (8175, 25449), (8483, 24525), (9265, 22455), (12475, 16677)]