20580560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1$

素因数の和:301

約数の個数: 160

約数和(自身を含む): 64495872

約数和(自身を除く): 43915312

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 130, 140, 143, 154, 176, 182, 208, 220, 257, 260, 280, 286, 308, 364, 385, 440, 455, 514, 520, 560, 572, 616, 715, 728, 770, 880, 910, 1001, 1028, 1040, 1144, 1232, 1285, 1430, 1456, 1540, 1799, 1820, 2002, 2056, 2288, 2570, 2827, 2860, 3080, 3341, 3598, 3640, 4004, 4112, 5005, 5140, 5654, 5720, 6160, 6682, 7196, 7280, 8008, 8995, 10010, 10280, 11308, 11440, 13364, 14135, 14392, 16016, 16705, 17990, 19789, 20020, 20560, 22616, 23387, 26728, 28270, 28784, 33410, 35980, 36751, 39578, 40040, 45232, 46774, 53456, 56540, 66820, 71960, 73502, 79156, 80080, 93548, 98945, 113080, 116935, 133640, 143920, 147004, 158312, 183755, 187096, 197890, 226160, 233870, 257257, 267280, 294008, 316624, 367510, 374192, 395780, 467740, 514514, 588016, 735020, 791560, 935480, 1029028, 1286285, 1470040, 1583120, 1870960, 2058056, 2572570, 2940080, 4116112, 5145140, 10290280, 20580560]

約数ペア:

[(1, 20580560), (2, 10290280), (4, 5145140), (5, 4116112), (7, 2940080), (8, 2572570), (10, 2058056), (11, 1870960), (13, 1583120), (14, 1470040), (16, 1286285), (20, 1029028), (22, 935480), (26, 791560), (28, 735020), (35, 588016), (40, 514514), (44, 467740), (52, 395780), (55, 374192), (56, 367510), (65, 316624), (70, 294008), (77, 267280), (80, 257257), (88, 233870), (91, 226160), (104, 197890), (110, 187096), (112, 183755), (130, 158312), (140, 147004), (143, 143920), (154, 133640), (176, 116935), (182, 113080), (208, 98945), (220, 93548), (257, 80080), (260, 79156), (280, 73502), (286, 71960), (308, 66820), (364, 56540), (385, 53456), (440, 46774), (455, 45232), (514, 40040), (520, 39578), (560, 36751), (572, 35980), (616, 33410), (715, 28784), (728, 28270), (770, 26728), (880, 23387), (910, 22616), (1001, 20560), (1028, 20020), (1040, 19789), (1144, 17990), (1232, 16705), (1285, 16016), (1430, 14392), (1456, 14135), (1540, 13364), (1799, 11440), (1820, 11308), (2002, 10280), (2056, 10010), (2288, 8995), (2570, 8008), (2827, 7280), (2860, 7196), (3080, 6682), (3341, 6160), (3598, 5720), (3640, 5654), (4004, 5140), (4112, 5005)]