19722640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{859}}^1$

素因数の和:920

約数の個数: 80

約数和(自身を含む): 53746560

約数和(自身を除く): 34023920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 859, 1148, 1435, 1640, 1718, 2296, 2870, 3280, 3436, 4295, 4592, 5740, 6013, 6872, 8590, 11480, 12026, 13744, 17180, 22960, 24052, 30065, 34360, 35219, 48104, 60130, 68720, 70438, 96208, 120260, 140876, 176095, 240520, 246533, 281752, 352190, 481040, 493066, 563504, 704380, 986132, 1232665, 1408760, 1972264, 2465330, 2817520, 3944528, 4930660, 9861320, 19722640]

約数ペア:

[(1, 19722640), (2, 9861320), (4, 4930660), (5, 3944528), (7, 2817520), (8, 2465330), (10, 1972264), (14, 1408760), (16, 1232665), (20, 986132), (28, 704380), (35, 563504), (40, 493066), (41, 481040), (56, 352190), (70, 281752), (80, 246533), (82, 240520), (112, 176095), (140, 140876), (164, 120260), (205, 96208), (280, 70438), (287, 68720), (328, 60130), (410, 48104), (560, 35219), (574, 34360), (656, 30065), (820, 24052), (859, 22960), (1148, 17180), (1435, 13744), (1640, 12026), (1718, 11480), (2296, 8590), (2870, 6872), (3280, 6013), (3436, 5740), (4295, 4592)]