20058395

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 30643200

約数和(自身を除く): 10584805

約数列:

[1, 5, 7, 19, 31, 35, 49, 95, 133, 139, 155, 217, 245, 589, 665, 695, 931, 973, 1085, 1519, 2641, 2945, 4123, 4309, 4655, 4865, 6811, 7595, 13205, 18487, 20615, 21545, 28861, 30163, 34055, 81871, 92435, 129409, 144305, 150815, 211141, 409355, 573097, 647045, 1055705, 2865485, 4011679, 20058395]

約数ペア:

[(1, 20058395), (5, 4011679), (7, 2865485), (19, 1055705), (31, 647045), (35, 573097), (49, 409355), (95, 211141), (133, 150815), (139, 144305), (155, 129409), (217, 92435), (245, 81871), (589, 34055), (665, 30163), (695, 28861), (931, 21545), (973, 20615), (1085, 18487), (1519, 13205), (2641, 7595), (2945, 6811), (4123, 4865), (4309, 4655)]