19991397

素因数分解:

$3^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1\times {\mathrm{251}}^1$

素因数の和:584

約数の個数: 16

約数和(自身を含む): 27095040

約数和(自身を除く): 7103643

約数列:

[1, 3, 139, 191, 251, 417, 573, 753, 26549, 34889, 47941, 79647, 104667, 143823, 6663799, 19991397]

約数ペア:

[(1, 19991397), (3, 6663799), (139, 143823), (191, 104667), (251, 79647), (417, 47941), (573, 34889), (753, 26549)]