21563038

素因数分解:

$2^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{43}}^2$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 40888800

約数和(自身を除く): 19325762

約数列:

[1, 2, 7, 14, 17, 34, 43, 49, 86, 98, 119, 238, 301, 343, 602, 686, 731, 833, 1462, 1666, 1849, 2107, 3698, 4214, 5117, 5831, 10234, 11662, 12943, 14749, 25886, 29498, 31433, 35819, 62866, 71638, 90601, 181202, 220031, 250733, 440062, 501466, 634207, 1268414, 1540217, 3080434, 10781519, 21563038]

約数ペア:

[(1, 21563038), (2, 10781519), (7, 3080434), (14, 1540217), (17, 1268414), (34, 634207), (43, 501466), (49, 440062), (86, 250733), (98, 220031), (119, 181202), (238, 90601), (301, 71638), (343, 62866), (602, 35819), (686, 31433), (731, 29498), (833, 25886), (1462, 14749), (1666, 12943), (1849, 11662), (2107, 10234), (3698, 5831), (4214, 5117)]