20912320

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{457}}^1$

素因数の和:498

約数の個数: 112

約数和(自身を含む): 58631328

約数和(自身を除く): 37719008

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 320, 352, 416, 440, 457, 520, 572, 704, 715, 832, 880, 914, 1040, 1144, 1430, 1760, 1828, 2080, 2285, 2288, 2860, 3520, 3656, 4160, 4570, 4576, 5027, 5720, 5941, 7312, 9140, 9152, 10054, 11440, 11882, 14624, 18280, 20108, 22880, 23764, 25135, 29248, 29705, 36560, 40216, 45760, 47528, 50270, 59410, 65351, 73120, 80432, 95056, 100540, 118820, 130702, 146240, 160864, 190112, 201080, 237640, 261404, 321728, 326755, 380224, 402160, 475280, 522808, 653510, 804320, 950560, 1045616, 1307020, 1608640, 1901120, 2091232, 2614040, 4182464, 5228080, 10456160, 20912320]

約数ペア:

[(1, 20912320), (2, 10456160), (4, 5228080), (5, 4182464), (8, 2614040), (10, 2091232), (11, 1901120), (13, 1608640), (16, 1307020), (20, 1045616), (22, 950560), (26, 804320), (32, 653510), (40, 522808), (44, 475280), (52, 402160), (55, 380224), (64, 326755), (65, 321728), (80, 261404), (88, 237640), (104, 201080), (110, 190112), (130, 160864), (143, 146240), (160, 130702), (176, 118820), (208, 100540), (220, 95056), (260, 80432), (286, 73120), (320, 65351), (352, 59410), (416, 50270), (440, 47528), (457, 45760), (520, 40216), (572, 36560), (704, 29705), (715, 29248), (832, 25135), (880, 23764), (914, 22880), (1040, 20108), (1144, 18280), (1430, 14624), (1760, 11882), (1828, 11440), (2080, 10054), (2285, 9152), (2288, 9140), (2860, 7312), (3520, 5941), (3656, 5720), (4160, 5027), (4570, 4576)]