20621916

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 144

約数和(自身を含む): 64646400

約数和(自身を除く): 44024484

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 59, 63, 73, 76, 84, 114, 118, 126, 133, 146, 171, 177, 219, 228, 236, 252, 266, 292, 342, 354, 399, 413, 438, 511, 531, 532, 657, 684, 708, 798, 826, 876, 1022, 1062, 1121, 1197, 1239, 1314, 1387, 1533, 1596, 1652, 2044, 2124, 2242, 2394, 2478, 2628, 2774, 3066, 3363, 3717, 4161, 4307, 4484, 4599, 4788, 4956, 5548, 6132, 6726, 7434, 7847, 8322, 8614, 9198, 9709, 10089, 12483, 12921, 13452, 14868, 15694, 16644, 17228, 18396, 19418, 20178, 23541, 24966, 25842, 29127, 30149, 31388, 38763, 38836, 40356, 47082, 49932, 51684, 58254, 60298, 70623, 77526, 81833, 87381, 90447, 94164, 116508, 120596, 141246, 155052, 163666, 174762, 180894, 245499, 271341, 282492, 327332, 349524, 361788, 490998, 542682, 572831, 736497, 981996, 1085364, 1145662, 1472994, 1718493, 2291324, 2945988, 3436986, 5155479, 6873972, 10310958, 20621916]

約数ペア:

[(1, 20621916), (2, 10310958), (3, 6873972), (4, 5155479), (6, 3436986), (7, 2945988), (9, 2291324), (12, 1718493), (14, 1472994), (18, 1145662), (19, 1085364), (21, 981996), (28, 736497), (36, 572831), (38, 542682), (42, 490998), (57, 361788), (59, 349524), (63, 327332), (73, 282492), (76, 271341), (84, 245499), (114, 180894), (118, 174762), (126, 163666), (133, 155052), (146, 141246), (171, 120596), (177, 116508), (219, 94164), (228, 90447), (236, 87381), (252, 81833), (266, 77526), (292, 70623), (342, 60298), (354, 58254), (399, 51684), (413, 49932), (438, 47082), (511, 40356), (531, 38836), (532, 38763), (657, 31388), (684, 30149), (708, 29127), (798, 25842), (826, 24966), (876, 23541), (1022, 20178), (1062, 19418), (1121, 18396), (1197, 17228), (1239, 16644), (1314, 15694), (1387, 14868), (1533, 13452), (1596, 12921), (1652, 12483), (2044, 10089), (2124, 9709), (2242, 9198), (2394, 8614), (2478, 8322), (2628, 7847), (2774, 7434), (3066, 6726), (3363, 6132), (3717, 5548), (4161, 4956), (4307, 4788), (4484, 4599)]