20021768

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 41504400

約数和(自身を除く): 21482632

約数列:

[1, 2, 4, 8, 13, 26, 52, 59, 104, 118, 169, 236, 251, 338, 472, 502, 676, 767, 1004, 1352, 1534, 2008, 3068, 3263, 6136, 6526, 9971, 13052, 14809, 19942, 26104, 29618, 39884, 42419, 59236, 79768, 84838, 118472, 169676, 192517, 339352, 385034, 770068, 1540136, 2502721, 5005442, 10010884, 20021768]

約数ペア:

[(1, 20021768), (2, 10010884), (4, 5005442), (8, 2502721), (13, 1540136), (26, 770068), (52, 385034), (59, 339352), (104, 192517), (118, 169676), (169, 118472), (236, 84838), (251, 79768), (338, 59236), (472, 42419), (502, 39884), (676, 29618), (767, 26104), (1004, 19942), (1352, 14809), (1534, 13052), (2008, 9971), (3068, 6526), (3263, 6136)]