1997654319

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{743}}^1\times {\mathrm{1747}}^1$

素因数の和:2521

約数の個数: 40

約数和(自身を含む): 3147239040

約数和(自身を除く): 1149584721

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 743, 1539, 1747, 2229, 5241, 6687, 14117, 15723, 20061, 33193, 42351, 47169, 60183, 99579, 127053, 141507, 298737, 381159, 896211, 1143477, 1298021, 2688633, 3894063, 11682189, 24662399, 35046567, 73987197, 105139701, 221961591, 665884773, 1997654319]

約数ペア:

[(1, 1997654319), (3, 665884773), (9, 221961591), (19, 105139701), (27, 73987197), (57, 35046567), (81, 24662399), (171, 11682189), (513, 3894063), (743, 2688633), (1539, 1298021), (1747, 1143477), (2229, 896211), (5241, 381159), (6687, 298737), (14117, 141507), (15723, 127053), (20061, 99579), (33193, 60183), (42351, 47169)]