20632725

素因数分解:

$3^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:488

約数の個数: 60

約数和(自身を含む): 39970656

約数和(自身を除く): 19337931

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 81, 115, 135, 207, 225, 345, 405, 443, 575, 621, 675, 1035, 1329, 1725, 1863, 2025, 2215, 3105, 3987, 5175, 6645, 9315, 10189, 11075, 11961, 15525, 19935, 30567, 33225, 35883, 46575, 50945, 59805, 91701, 99675, 152835, 179415, 254725, 275103, 299025, 458505, 764175, 825309, 897075, 1375515, 2292525, 4126545, 6877575, 20632725]

約数ペア:

[(1, 20632725), (3, 6877575), (5, 4126545), (9, 2292525), (15, 1375515), (23, 897075), (25, 825309), (27, 764175), (45, 458505), (69, 299025), (75, 275103), (81, 254725), (115, 179415), (135, 152835), (207, 99675), (225, 91701), (345, 59805), (405, 50945), (443, 46575), (575, 35883), (621, 33225), (675, 30567), (1035, 19935), (1329, 15525), (1725, 11961), (1863, 11075), (2025, 10189), (2215, 9315), (3105, 6645), (3987, 5175)]