655121691

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{2081}}^1$

素因数の和:2376

約数の個数: 48

約数和(自身を含む): 1143267840

約数和(自身を除く): 488146149

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 263, 399, 789, 1197, 1841, 2081, 2367, 4997, 5523, 6243, 14567, 14991, 16569, 18729, 34979, 39539, 43701, 44973, 104937, 118617, 131103, 276773, 314811, 355851, 547303, 830319, 1641909, 2490957, 3831121, 4925727, 10398757, 11493363, 31196271, 34480089, 72791299, 93588813, 218373897, 655121691]

約数ペア:

[(1, 655121691), (3, 218373897), (7, 93588813), (9, 72791299), (19, 34480089), (21, 31196271), (57, 11493363), (63, 10398757), (133, 4925727), (171, 3831121), (263, 2490957), (399, 1641909), (789, 830319), (1197, 547303), (1841, 355851), (2081, 314811), (2367, 276773), (4997, 131103), (5523, 118617), (6243, 104937), (14567, 44973), (14991, 43701), (16569, 39539), (18729, 34979)]