18501231

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{521}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 30067200

約数和(自身を除く): 11565969

約数列:

[1, 3, 7, 19, 21, 57, 89, 133, 267, 399, 521, 623, 1563, 1691, 1869, 3647, 5073, 9899, 10941, 11837, 29697, 35511, 46369, 69293, 139107, 207879, 324583, 881011, 973749, 2643033, 6167077, 18501231]

約数ペア:

[(1, 18501231), (3, 6167077), (7, 2643033), (19, 973749), (21, 881011), (57, 324583), (89, 207879), (133, 139107), (267, 69293), (399, 46369), (521, 35511), (623, 29697), (1563, 11837), (1691, 10941), (1869, 9899), (3647, 5073)]