28210021

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 36115200

約数和(自身を除く): 7905179

約数列:

[1, 7, 17, 37, 43, 119, 149, 259, 301, 629, 731, 1043, 1591, 2533, 4403, 5117, 5513, 6407, 11137, 17731, 27047, 38591, 44849, 93721, 108919, 189329, 237059, 656047, 762433, 1659413, 4030003, 28210021]

約数ペア:

[(1, 28210021), (7, 4030003), (17, 1659413), (37, 762433), (43, 656047), (119, 237059), (149, 189329), (259, 108919), (301, 93721), (629, 44849), (731, 38591), (1043, 27047), (1591, 17731), (2533, 11137), (4403, 6407), (5117, 5513)]