20197887

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 30316032

約数和(自身を除く): 10118145

約数列:

[1, 3, 17, 23, 51, 67, 69, 201, 257, 391, 771, 1139, 1173, 1541, 3417, 4369, 4623, 5911, 13107, 17219, 17733, 26197, 51657, 78591, 100487, 292723, 301461, 396037, 878169, 1188111, 6732629, 20197887]

約数ペア:

[(1, 20197887), (3, 6732629), (17, 1188111), (23, 878169), (51, 396037), (67, 301461), (69, 292723), (201, 100487), (257, 78591), (391, 51657), (771, 26197), (1139, 17733), (1173, 17219), (1541, 13107), (3417, 5911), (4369, 4623)]