261567775

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{811}}^1$

素因数の和:944

約数の個数: 48

約数和(自身を含む): 394696960

約数和(自身を除く): 133129185

約数列:

[1, 5, 7, 19, 25, 35, 95, 97, 133, 175, 475, 485, 665, 679, 811, 1843, 2425, 3325, 3395, 4055, 5677, 9215, 12901, 15409, 16975, 20275, 28385, 46075, 64505, 77045, 78667, 107863, 141925, 322525, 385225, 393335, 539315, 550669, 1494673, 1966675, 2696575, 2753345, 7473365, 10462711, 13766725, 37366825, 52313555, 261567775]

約数ペア:

[(1, 261567775), (5, 52313555), (7, 37366825), (19, 13766725), (25, 10462711), (35, 7473365), (95, 2753345), (97, 2696575), (133, 1966675), (175, 1494673), (475, 550669), (485, 539315), (665, 393335), (679, 385225), (811, 322525), (1843, 141925), (2425, 107863), (3325, 78667), (3395, 77045), (4055, 64505), (5677, 46075), (9215, 28385), (12901, 20275), (15409, 16975)]