21667163

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2$

素因数の和:124

約数の個数: 36

約数和(自身を含む): 28871640

約数和(自身を除く): 7204477

約数列:

[1, 7, 17, 19, 37, 49, 119, 133, 259, 323, 629, 703, 833, 931, 1369, 1813, 2261, 4403, 4921, 9583, 11951, 15827, 23273, 26011, 30821, 34447, 67081, 83657, 162911, 182077, 442187, 585599, 1140377, 1274539, 3095309, 21667163]

約数ペア:

[(1, 21667163), (7, 3095309), (17, 1274539), (19, 1140377), (37, 585599), (49, 442187), (119, 182077), (133, 162911), (259, 83657), (323, 67081), (629, 34447), (703, 30821), (833, 26011), (931, 23273), (1369, 15827), (1813, 11951), (2261, 9583), (4403, 4921)]