20378547

素因数分解:

$3^4\times 7^1\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:429

約数の個数: 40

約数和(自身を含む): 35188736

約数和(自身を除く): 14810189

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 127, 189, 283, 381, 567, 849, 889, 1143, 1981, 2547, 2667, 3429, 5943, 7641, 8001, 10287, 17829, 22923, 24003, 35941, 53487, 72009, 107823, 160461, 251587, 323469, 754761, 970407, 2264283, 2911221, 6792849, 20378547]

約数ペア:

[(1, 20378547), (3, 6792849), (7, 2911221), (9, 2264283), (21, 970407), (27, 754761), (63, 323469), (81, 251587), (127, 160461), (189, 107823), (283, 72009), (381, 53487), (567, 35941), (849, 24003), (889, 22923), (1143, 17829), (1981, 10287), (2547, 8001), (2667, 7641), (3429, 5943)]