39980997

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 70287360

約数和(自身を除く): 30306363

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 127, 133, 171, 263, 381, 399, 789, 889, 1143, 1197, 1841, 2367, 2413, 2667, 4997, 5523, 7239, 8001, 14991, 16569, 16891, 21717, 33401, 34979, 44973, 50673, 100203, 104937, 152019, 233807, 300609, 314811, 634619, 701421, 1903857, 2104263, 4442333, 5711571, 13326999, 39980997]

約数ペア:

[(1, 39980997), (3, 13326999), (7, 5711571), (9, 4442333), (19, 2104263), (21, 1903857), (57, 701421), (63, 634619), (127, 314811), (133, 300609), (171, 233807), (263, 152019), (381, 104937), (399, 100203), (789, 50673), (889, 44973), (1143, 34979), (1197, 33401), (1841, 21717), (2367, 16891), (2413, 16569), (2667, 14991), (4997, 8001), (5523, 7239)]