21029727

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 9613473

約数列:

[1, 3, 29, 37, 47, 87, 111, 139, 141, 417, 1073, 1363, 1739, 3219, 4031, 4089, 5143, 5217, 6533, 12093, 15429, 19599, 50431, 149147, 151293, 189457, 241721, 447441, 568371, 725163, 7009909, 21029727]

約数ペア:

[(1, 21029727), (3, 7009909), (29, 725163), (37, 568371), (47, 447441), (87, 241721), (111, 189457), (139, 151293), (141, 149147), (417, 50431), (1073, 19599), (1363, 15429), (1739, 12093), (3219, 6533), (4031, 5217), (4089, 5143)]