19188729

素因数分解:

$3^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{563}}^1$

素因数の和:1117

約数の個数: 24

約数和(自身を含む): 31791552

約数和(自身を除く): 12602823

約数列:

[1, 3, 7, 9, 21, 63, 541, 563, 1623, 1689, 3787, 3941, 4869, 5067, 11361, 11823, 34083, 35469, 304583, 913749, 2132081, 2741247, 6396243, 19188729]

約数ペア:

[(1, 19188729), (3, 6396243), (7, 2741247), (9, 2132081), (21, 913749), (63, 304583), (541, 35469), (563, 34083), (1623, 11823), (1689, 11361), (3787, 5067), (3941, 4869)]