19647147

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 29306368

約数和(自身を除く): 9659221

約数列:

[1, 3, 13, 39, 67, 73, 103, 201, 219, 309, 871, 949, 1339, 2613, 2847, 4017, 4891, 6901, 7519, 14673, 20703, 22557, 63583, 89713, 97747, 190749, 269139, 293241, 503773, 1511319, 6549049, 19647147]

約数ペア:

[(1, 19647147), (3, 6549049), (13, 1511319), (39, 503773), (67, 293241), (73, 269139), (103, 190749), (201, 97747), (219, 89713), (309, 63583), (871, 22557), (949, 20703), (1339, 14673), (2613, 7519), (2847, 6901), (4017, 4891)]