19110520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{257}}^1$

素因数の和:305

約数の個数: 96

約数和(自身を含む): 50991120

約数和(自身を除く): 31880600

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 169, 220, 257, 260, 286, 338, 440, 514, 520, 572, 676, 715, 845, 1028, 1144, 1285, 1352, 1430, 1690, 1859, 2056, 2570, 2827, 2860, 3341, 3380, 3718, 5140, 5654, 5720, 6682, 6760, 7436, 9295, 10280, 11308, 13364, 14135, 14872, 16705, 18590, 22616, 26728, 28270, 33410, 36751, 37180, 43433, 56540, 66820, 73502, 74360, 86866, 113080, 133640, 147004, 173732, 183755, 217165, 294008, 347464, 367510, 434330, 477763, 735020, 868660, 955526, 1470040, 1737320, 1911052, 2388815, 3822104, 4777630, 9555260, 19110520]

約数ペア:

[(1, 19110520), (2, 9555260), (4, 4777630), (5, 3822104), (8, 2388815), (10, 1911052), (11, 1737320), (13, 1470040), (20, 955526), (22, 868660), (26, 735020), (40, 477763), (44, 434330), (52, 367510), (55, 347464), (65, 294008), (88, 217165), (104, 183755), (110, 173732), (130, 147004), (143, 133640), (169, 113080), (220, 86866), (257, 74360), (260, 73502), (286, 66820), (338, 56540), (440, 43433), (514, 37180), (520, 36751), (572, 33410), (676, 28270), (715, 26728), (845, 22616), (1028, 18590), (1144, 16705), (1285, 14872), (1352, 14135), (1430, 13364), (1690, 11308), (1859, 10280), (2056, 9295), (2570, 7436), (2827, 6760), (2860, 6682), (3341, 5720), (3380, 5654), (3718, 5140)]