20020509

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 33022080

約数和(自身を除く): 13001571

約数列:

[1, 3, 9, 17, 19, 51, 57, 71, 97, 153, 171, 213, 291, 323, 639, 873, 969, 1207, 1349, 1649, 1843, 2907, 3621, 4047, 4947, 5529, 6887, 10863, 12141, 14841, 16587, 20661, 22933, 31331, 61983, 68799, 93993, 117079, 130853, 206397, 281979, 351237, 392559, 1053711, 1177677, 2224501, 6673503, 20020509]

約数ペア:

[(1, 20020509), (3, 6673503), (9, 2224501), (17, 1177677), (19, 1053711), (51, 392559), (57, 351237), (71, 281979), (97, 206397), (153, 130853), (171, 117079), (213, 93993), (291, 68799), (323, 61983), (639, 31331), (873, 22933), (969, 20661), (1207, 16587), (1349, 14841), (1649, 12141), (1843, 10863), (2907, 6887), (3621, 5529), (4047, 4947)]