81528920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{1459}}^1$

素因数の和:1608

約数の個数: 64

約数和(自身を含む): 201830400

約数和(自身を除く): 120301480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 127, 220, 254, 440, 508, 635, 1016, 1270, 1397, 1459, 2540, 2794, 2918, 5080, 5588, 5836, 6985, 7295, 11176, 11672, 13970, 14590, 16049, 27940, 29180, 32098, 55880, 58360, 64196, 80245, 128392, 160490, 185293, 320980, 370586, 641960, 741172, 926465, 1482344, 1852930, 2038223, 3705860, 4076446, 7411720, 8152892, 10191115, 16305784, 20382230, 40764460, 81528920]

約数ペア:

[(1, 81528920), (2, 40764460), (4, 20382230), (5, 16305784), (8, 10191115), (10, 8152892), (11, 7411720), (20, 4076446), (22, 3705860), (40, 2038223), (44, 1852930), (55, 1482344), (88, 926465), (110, 741172), (127, 641960), (220, 370586), (254, 320980), (440, 185293), (508, 160490), (635, 128392), (1016, 80245), (1270, 64196), (1397, 58360), (1459, 55880), (2540, 32098), (2794, 29180), (2918, 27940), (5080, 16049), (5588, 14590), (5836, 13970), (6985, 11672), (7295, 11176)]