21349930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 46303488

約数和(自身を除く): 24953558

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 43, 70, 82, 86, 173, 205, 215, 287, 301, 346, 410, 430, 574, 602, 865, 1211, 1435, 1505, 1730, 1763, 2422, 2870, 3010, 3526, 6055, 7093, 7439, 8815, 12110, 12341, 14186, 14878, 17630, 24682, 35465, 37195, 49651, 52073, 61705, 70930, 74390, 99302, 104146, 123410, 248255, 260365, 304999, 496510, 520730, 609998, 1524995, 2134993, 3049990, 4269986, 10674965, 21349930]

約数ペア:

[(1, 21349930), (2, 10674965), (5, 4269986), (7, 3049990), (10, 2134993), (14, 1524995), (35, 609998), (41, 520730), (43, 496510), (70, 304999), (82, 260365), (86, 248255), (173, 123410), (205, 104146), (215, 99302), (287, 74390), (301, 70930), (346, 61705), (410, 52073), (430, 49651), (574, 37195), (602, 35465), (865, 24682), (1211, 17630), (1435, 14878), (1505, 14186), (1730, 12341), (1763, 12110), (2422, 8815), (2870, 7439), (3010, 7093), (3526, 6055)]