990212561855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{580769831}}^1$

素因数の和:580769878

約数の個数: 16

約数和(自身を含む): 1338093692928

約数和(自身を除く): 347881131073

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 580769831, 2903849155, 6388468141, 18003864761, 31942340705, 90019323805, 198042512371, 990212561855]

約数ペア:

[(1, 990212561855), (5, 198042512371), (11, 90019323805), (31, 31942340705), (55, 18003864761), (155, 6388468141), (341, 2903849155), (1705, 580769831)]