18681075

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{409}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 39655200

約数和(自身を除く): 20974125

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 29, 35, 45, 63, 75, 87, 105, 145, 175, 203, 225, 261, 315, 409, 435, 525, 609, 725, 1015, 1227, 1305, 1575, 1827, 2045, 2175, 2863, 3045, 3681, 5075, 6135, 6525, 8589, 9135, 10225, 11861, 14315, 15225, 18405, 25767, 30675, 35583, 42945, 45675, 59305, 71575, 83027, 92025, 106749, 128835, 177915, 214725, 249081, 296525, 415135, 533745, 644175, 747243, 889575, 1245405, 2075675, 2668725, 3736215, 6227025, 18681075]

約数ペア:

[(1, 18681075), (3, 6227025), (5, 3736215), (7, 2668725), (9, 2075675), (15, 1245405), (21, 889575), (25, 747243), (29, 644175), (35, 533745), (45, 415135), (63, 296525), (75, 249081), (87, 214725), (105, 177915), (145, 128835), (175, 106749), (203, 92025), (225, 83027), (261, 71575), (315, 59305), (409, 45675), (435, 42945), (525, 35583), (609, 30675), (725, 25767), (1015, 18405), (1227, 15225), (1305, 14315), (1575, 11861), (1827, 10225), (2045, 9135), (2175, 8589), (2863, 6525), (3045, 6135), (3681, 5075)]