19910007

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{449}}^1$

素因数の和:847

約数の個数: 24

約数和(自身を含む): 31122000

約数和(自身を除く): 11211993

約数列:

[1, 3, 9, 13, 39, 117, 379, 449, 1137, 1347, 3411, 4041, 4927, 5837, 14781, 17511, 44343, 52533, 170171, 510513, 1531539, 2212223, 6636669, 19910007]

約数ペア:

[(1, 19910007), (3, 6636669), (9, 2212223), (13, 1531539), (39, 510513), (117, 170171), (379, 52533), (449, 44343), (1137, 17511), (1347, 14781), (3411, 5837), (4041, 4927)]