197985825

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{271}}^1$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 378832896

約数和(自身を除く): 180847071

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 191, 225, 255, 271, 425, 573, 765, 813, 955, 1275, 1355, 1719, 2439, 2865, 3247, 3825, 4065, 4607, 4775, 6775, 8595, 9741, 12195, 13821, 14325, 16235, 20325, 23035, 29223, 41463, 42975, 48705, 51761, 60975, 69105, 81175, 115175, 146115, 155283, 207315, 243525, 258805, 345525, 465849, 730575, 776415, 879937, 1036575, 1294025, 2329245, 2639811, 3882075, 4399685, 7919433, 11646225, 13199055, 21998425, 39597165, 65995275, 197985825]

約数ペア:

[(1, 197985825), (3, 65995275), (5, 39597165), (9, 21998425), (15, 13199055), (17, 11646225), (25, 7919433), (45, 4399685), (51, 3882075), (75, 2639811), (85, 2329245), (153, 1294025), (191, 1036575), (225, 879937), (255, 776415), (271, 730575), (425, 465849), (573, 345525), (765, 258805), (813, 243525), (955, 207315), (1275, 155283), (1355, 146115), (1719, 115175), (2439, 81175), (2865, 69105), (3247, 60975), (3825, 51761), (4065, 48705), (4607, 42975), (4775, 41463), (6775, 29223), (8595, 23035), (9741, 20325), (12195, 16235), (13821, 14325)]