19408557

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6949}}^1$

素因数の和:6985

約数の個数: 24

約数和(自身を含む): 31692000

約数和(自身を除く): 12283443

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 6949, 20847, 48643, 132031, 145929, 340501, 396093, 924217, 1021503, 2772651, 6469519, 19408557]

約数ペア:

[(1, 19408557), (3, 6469519), (7, 2772651), (19, 1021503), (21, 924217), (49, 396093), (57, 340501), (133, 145929), (147, 132031), (399, 48643), (931, 20847), (2793, 6949)]