51911990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21017}}^1$

素因数の和:21056

約数の個数: 32

約数和(自身を含む): 105930720

約数和(自身を除く): 54018730

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 21017, 42034, 105085, 210170, 273221, 399323, 546442, 798646, 1366105, 1996615, 2732210, 3993230, 5191199, 10382398, 25955995, 51911990]

約数ペア:

[(1, 51911990), (2, 25955995), (5, 10382398), (10, 5191199), (13, 3993230), (19, 2732210), (26, 1996615), (38, 1366105), (65, 798646), (95, 546442), (130, 399323), (190, 273221), (247, 210170), (494, 105085), (1235, 42034), (2470, 21017)]