208973871

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{331}}^1\times {\mathrm{349}}^1$

素因数の和:756

約数の個数: 32

約数和(自身を含む): 316064000

約数和(自身を除く): 107090129

約数列:

[1, 3, 9, 27, 67, 201, 331, 349, 603, 993, 1047, 1809, 2979, 3141, 8937, 9423, 22177, 23383, 66531, 70149, 115519, 199593, 210447, 346557, 598779, 631341, 1039671, 3119013, 7739773, 23219319, 69657957, 208973871]

約数ペア:

[(1, 208973871), (3, 69657957), (9, 23219319), (27, 7739773), (67, 3119013), (201, 1039671), (331, 631341), (349, 598779), (603, 346557), (993, 210447), (1047, 199593), (1809, 115519), (2979, 70149), (3141, 66531), (8937, 23383), (9423, 22177)]