20378540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11197}}^1$

素因数の和:11226

約数の個数: 48

約数和(自身を含む): 52675392

約数和(自身を除く): 32296852

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11197, 22394, 44788, 55985, 78379, 111970, 145561, 156758, 223940, 291122, 313516, 391895, 582244, 727805, 783790, 1018927, 1455610, 1567580, 2037854, 2911220, 4075708, 5094635, 10189270, 20378540]

約数ペア:

[(1, 20378540), (2, 10189270), (4, 5094635), (5, 4075708), (7, 2911220), (10, 2037854), (13, 1567580), (14, 1455610), (20, 1018927), (26, 783790), (28, 727805), (35, 582244), (52, 391895), (65, 313516), (70, 291122), (91, 223940), (130, 156758), (140, 145561), (182, 111970), (260, 78379), (364, 55985), (455, 44788), (910, 22394), (1820, 11197)]