687399993

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1789}}^1$

素因数の和:1931

約数の個数: 64

約数和(自身を含む): 1237248000

約数和(自身を除く): 549848007

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 107, 133, 171, 189, 321, 399, 513, 749, 963, 1197, 1789, 2033, 2247, 2889, 3591, 5367, 6099, 6741, 12523, 14231, 16101, 18297, 20223, 33991, 37569, 42693, 48303, 54891, 101973, 112707, 128079, 191423, 237937, 305919, 338121, 384237, 574269, 713811, 917757, 1339961, 1722807, 2141433, 3637037, 4019883, 5168421, 6424299, 10911111, 12059649, 25459259, 32733333, 36178947, 76377777, 98199999, 229133331, 687399993]

約数ペア:

[(1, 687399993), (3, 229133331), (7, 98199999), (9, 76377777), (19, 36178947), (21, 32733333), (27, 25459259), (57, 12059649), (63, 10911111), (107, 6424299), (133, 5168421), (171, 4019883), (189, 3637037), (321, 2141433), (399, 1722807), (513, 1339961), (749, 917757), (963, 713811), (1197, 574269), (1789, 384237), (2033, 338121), (2247, 305919), (2889, 237937), (3591, 191423), (5367, 128079), (6099, 112707), (6741, 101973), (12523, 54891), (14231, 48303), (16101, 42693), (18297, 37569), (20223, 33991)]