19504920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:265

約数の個数: 128

約数和(自身を含む): 63037440

約数和(自身を除く): 43532520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 37, 40, 46, 60, 69, 74, 92, 111, 115, 120, 138, 148, 184, 185, 191, 222, 230, 276, 296, 345, 370, 382, 444, 460, 552, 555, 573, 690, 740, 764, 851, 888, 920, 955, 1110, 1146, 1380, 1480, 1528, 1702, 1910, 2220, 2292, 2553, 2760, 2865, 3404, 3820, 4255, 4393, 4440, 4584, 5106, 5730, 6808, 7067, 7640, 8510, 8786, 10212, 11460, 12765, 13179, 14134, 17020, 17572, 20424, 21201, 21965, 22920, 25530, 26358, 28268, 34040, 35144, 35335, 42402, 43930, 51060, 52716, 56536, 65895, 70670, 84804, 87860, 102120, 105432, 106005, 131790, 141340, 162541, 169608, 175720, 212010, 263580, 282680, 325082, 424020, 487623, 527160, 650164, 812705, 848040, 975246, 1300328, 1625410, 1950492, 2438115, 3250820, 3900984, 4876230, 6501640, 9752460, 19504920]

約数ペア:

[(1, 19504920), (2, 9752460), (3, 6501640), (4, 4876230), (5, 3900984), (6, 3250820), (8, 2438115), (10, 1950492), (12, 1625410), (15, 1300328), (20, 975246), (23, 848040), (24, 812705), (30, 650164), (37, 527160), (40, 487623), (46, 424020), (60, 325082), (69, 282680), (74, 263580), (92, 212010), (111, 175720), (115, 169608), (120, 162541), (138, 141340), (148, 131790), (184, 106005), (185, 105432), (191, 102120), (222, 87860), (230, 84804), (276, 70670), (296, 65895), (345, 56536), (370, 52716), (382, 51060), (444, 43930), (460, 42402), (552, 35335), (555, 35144), (573, 34040), (690, 28268), (740, 26358), (764, 25530), (851, 22920), (888, 21965), (920, 21201), (955, 20424), (1110, 17572), (1146, 17020), (1380, 14134), (1480, 13179), (1528, 12765), (1702, 11460), (1910, 10212), (2220, 8786), (2292, 8510), (2553, 7640), (2760, 7067), (2865, 6808), (3404, 5730), (3820, 5106), (4255, 4584), (4393, 4440)]