20193525

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 40622400

約数和(自身を除く): 20428875

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 41, 45, 55, 75, 99, 123, 165, 199, 205, 225, 275, 369, 451, 495, 597, 615, 825, 995, 1025, 1353, 1791, 1845, 2189, 2255, 2475, 2985, 3075, 4059, 4975, 6567, 6765, 8159, 8955, 9225, 10945, 11275, 14925, 19701, 20295, 24477, 32835, 33825, 40795, 44775, 54725, 73431, 89749, 98505, 101475, 122385, 164175, 203975, 269247, 367155, 448745, 492525, 611925, 807741, 1346235, 1835775, 2243725, 4038705, 6731175, 20193525]

約数ペア:

[(1, 20193525), (3, 6731175), (5, 4038705), (9, 2243725), (11, 1835775), (15, 1346235), (25, 807741), (33, 611925), (41, 492525), (45, 448745), (55, 367155), (75, 269247), (99, 203975), (123, 164175), (165, 122385), (199, 101475), (205, 98505), (225, 89749), (275, 73431), (369, 54725), (451, 44775), (495, 40795), (597, 33825), (615, 32835), (825, 24477), (995, 20295), (1025, 19701), (1353, 14925), (1791, 11275), (1845, 10945), (2189, 9225), (2255, 8955), (2475, 8159), (2985, 6765), (3075, 6567), (4059, 4975)]