20952009

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1367}}^1$

素因数の和:1517

約数の個数: 24

約数和(自身を含む): 32864832

約数和(自身を除く): 11912823

約数列:

[1, 3, 9, 13, 39, 117, 131, 393, 1179, 1367, 1703, 4101, 5109, 12303, 15327, 17771, 53313, 159939, 179077, 537231, 1611693, 2328001, 6984003, 20952009]

約数ペア:

[(1, 20952009), (3, 6984003), (9, 2328001), (13, 1611693), (39, 537231), (117, 179077), (131, 159939), (393, 53313), (1179, 17771), (1367, 15327), (1703, 12303), (4101, 5109)]