81912740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{45007}}^1$

素因数の和:45036

約数の個数: 48

約数和(自身を含む): 211717632

約数和(自身を除く): 129804892

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, 45007, 90014, 180028, 225035, 315049, 450070, 585091, 630098, 900140, 1170182, 1260196, 1575245, 2340364, 2925455, 3150490, 4095637, 5850910, 6300980, 8191274, 11701820, 16382548, 20478185, 40956370, 81912740]

約数ペア:

[(1, 81912740), (2, 40956370), (4, 20478185), (5, 16382548), (7, 11701820), (10, 8191274), (13, 6300980), (14, 5850910), (20, 4095637), (26, 3150490), (28, 2925455), (35, 2340364), (52, 1575245), (65, 1260196), (70, 1170182), (91, 900140), (130, 630098), (140, 585091), (182, 450070), (260, 315049), (364, 225035), (455, 180028), (910, 90014), (1820, 45007)]