13281380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4993}}^1$

素因数の和:5028

約数の個数: 48

約数和(自身を含む): 33559680

約数和(自身を除く): 20278300

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 4993, 9986, 19972, 24965, 34951, 49930, 69902, 94867, 99860, 139804, 174755, 189734, 349510, 379468, 474335, 664069, 699020, 948670, 1328138, 1897340, 2656276, 3320345, 6640690, 13281380]

約数ペア:

[(1, 13281380), (2, 6640690), (4, 3320345), (5, 2656276), (7, 1897340), (10, 1328138), (14, 948670), (19, 699020), (20, 664069), (28, 474335), (35, 379468), (38, 349510), (70, 189734), (76, 174755), (95, 139804), (133, 99860), (140, 94867), (190, 69902), (266, 49930), (380, 34951), (532, 24965), (665, 19972), (1330, 9986), (2660, 4993)]