51485980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28289}}^1$

素因数の和:28318

約数の個数: 48

約数和(自身を含む): 133076160

約数和(自身を除く): 81590180

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, 28289, 56578, 113156, 141445, 198023, 282890, 367757, 396046, 565780, 735514, 792092, 990115, 1471028, 1838785, 1980230, 2574299, 3677570, 3960460, 5148598, 7355140, 10297196, 12871495, 25742990, 51485980]

約数ペア:

[(1, 51485980), (2, 25742990), (4, 12871495), (5, 10297196), (7, 7355140), (10, 5148598), (13, 3960460), (14, 3677570), (20, 2574299), (26, 1980230), (28, 1838785), (35, 1471028), (52, 990115), (65, 792092), (70, 735514), (91, 565780), (130, 396046), (140, 367757), (182, 282890), (260, 198023), (364, 141445), (455, 113156), (910, 56578), (1820, 28289)]