20377575

素因数分解:

$3^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:398

約数の個数: 60

約数和(自身を含む): 39160440

約数和(自身を除く): 18782865

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 81, 87, 135, 145, 225, 261, 347, 405, 435, 675, 725, 783, 1041, 1305, 1735, 2025, 2175, 2349, 3123, 3915, 5205, 6525, 8675, 9369, 10063, 11745, 15615, 19575, 26025, 28107, 30189, 46845, 50315, 58725, 78075, 90567, 140535, 150945, 234225, 251575, 271701, 452835, 702675, 754725, 815103, 1358505, 2264175, 4075515, 6792525, 20377575]

約数ペア:

[(1, 20377575), (3, 6792525), (5, 4075515), (9, 2264175), (15, 1358505), (25, 815103), (27, 754725), (29, 702675), (45, 452835), (75, 271701), (81, 251575), (87, 234225), (135, 150945), (145, 140535), (225, 90567), (261, 78075), (347, 58725), (405, 50315), (435, 46845), (675, 30189), (725, 28107), (783, 26025), (1041, 19575), (1305, 15615), (1735, 11745), (2025, 10063), (2175, 9369), (2349, 8675), (3123, 6525), (3915, 5205)]