12778040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{257}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 31764960

約数和(自身を除く): 18986920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 113, 220, 226, 257, 440, 452, 514, 565, 904, 1028, 1130, 1243, 1285, 2056, 2260, 2486, 2570, 2827, 4520, 4972, 5140, 5654, 6215, 9944, 10280, 11308, 12430, 14135, 22616, 24860, 28270, 29041, 49720, 56540, 58082, 113080, 116164, 145205, 232328, 290410, 319451, 580820, 638902, 1161640, 1277804, 1597255, 2555608, 3194510, 6389020, 12778040]

約数ペア:

[(1, 12778040), (2, 6389020), (4, 3194510), (5, 2555608), (8, 1597255), (10, 1277804), (11, 1161640), (20, 638902), (22, 580820), (40, 319451), (44, 290410), (55, 232328), (88, 145205), (110, 116164), (113, 113080), (220, 58082), (226, 56540), (257, 49720), (440, 29041), (452, 28270), (514, 24860), (565, 22616), (904, 14135), (1028, 12430), (1130, 11308), (1243, 10280), (1285, 9944), (2056, 6215), (2260, 5654), (2486, 5140), (2570, 4972), (2827, 4520)]