181721007

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 301418208

約数和(自身を除く): 119697201

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 211, 221, 433, 633, 663, 1299, 1899, 1989, 2743, 3587, 3897, 5629, 7361, 8229, 10761, 16887, 22083, 24687, 32283, 46631, 50661, 66249, 91363, 95693, 139893, 274089, 287079, 419679, 822267, 861237, 1187719, 1553171, 3563157, 4659513, 10689471, 13978539, 20191223, 60573669, 181721007]

約数ペア:

[(1, 181721007), (3, 60573669), (9, 20191223), (13, 13978539), (17, 10689471), (39, 4659513), (51, 3563157), (117, 1553171), (153, 1187719), (211, 861237), (221, 822267), (433, 419679), (633, 287079), (663, 274089), (1299, 139893), (1899, 95693), (1989, 91363), (2743, 66249), (3587, 50661), (3897, 46631), (5629, 32283), (7361, 24687), (8229, 22083), (10761, 16887)]