20406989408

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:589

約数の個数: 144

約数和(自身を含む): 45148486320

約数和(自身を除く): 24741496912

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 53, 94, 104, 106, 188, 208, 212, 376, 416, 419, 424, 611, 689, 752, 838, 848, 1222, 1378, 1504, 1676, 1696, 2209, 2444, 2491, 2756, 3352, 4418, 4888, 4982, 5447, 5512, 6704, 8836, 9776, 9964, 10894, 11024, 13408, 17672, 19552, 19693, 19928, 21788, 22048, 22207, 28717, 32383, 35344, 39386, 39856, 43576, 44414, 57434, 64766, 70688, 78772, 79712, 87152, 88828, 114868, 117077, 129532, 157544, 174304, 177656, 229736, 234154, 256009, 259064, 288691, 315088, 355312, 459472, 468308, 512018, 518128, 577382, 630176, 710624, 918944, 925571, 936616, 1024036, 1036256, 1043729, 1154764, 1522001, 1851142, 1873232, 2048072, 2087458, 2309528, 3044002, 3702284, 3746464, 4096144, 4174916, 4619056, 6088004, 7404568, 8192288, 8349832, 9238112, 12032423, 12176008, 13568477, 14809136, 16699664, 24064846, 24352016, 27136954, 29618272, 33399328, 48129692, 48704032, 49055263, 54273908, 96259384, 98110526, 108547816, 192518768, 196221052, 217095632, 385037536, 392442104, 434191264, 637718419, 784884208, 1275436838, 1569768416, 2550873676, 5101747352, 10203494704, 20406989408]

約数ペア:

[(1, 20406989408), (2, 10203494704), (4, 5101747352), (8, 2550873676), (13, 1569768416), (16, 1275436838), (26, 784884208), (32, 637718419), (47, 434191264), (52, 392442104), (53, 385037536), (94, 217095632), (104, 196221052), (106, 192518768), (188, 108547816), (208, 98110526), (212, 96259384), (376, 54273908), (416, 49055263), (419, 48704032), (424, 48129692), (611, 33399328), (689, 29618272), (752, 27136954), (838, 24352016), (848, 24064846), (1222, 16699664), (1378, 14809136), (1504, 13568477), (1676, 12176008), (1696, 12032423), (2209, 9238112), (2444, 8349832), (2491, 8192288), (2756, 7404568), (3352, 6088004), (4418, 4619056), (4888, 4174916), (4982, 4096144), (5447, 3746464), (5512, 3702284), (6704, 3044002), (8836, 2309528), (9776, 2087458), (9964, 2048072), (10894, 1873232), (11024, 1851142), (13408, 1522001), (17672, 1154764), (19552, 1043729), (19693, 1036256), (19928, 1024036), (21788, 936616), (22048, 925571), (22207, 918944), (28717, 710624), (32383, 630176), (35344, 577382), (39386, 518128), (39856, 512018), (43576, 468308), (44414, 459472), (57434, 355312), (64766, 315088), (70688, 288691), (78772, 259064), (79712, 256009), (87152, 234154), (88828, 229736), (114868, 177656), (117077, 174304), (129532, 157544)]