21627008

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{317}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 47680920

約数和(自身を除く): 26053912

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 41, 52, 64, 82, 104, 128, 164, 208, 317, 328, 416, 533, 634, 656, 832, 1066, 1268, 1312, 1664, 2132, 2536, 2624, 4121, 4264, 5072, 5248, 8242, 8528, 10144, 12997, 16484, 17056, 20288, 25994, 32968, 34112, 40576, 51988, 65936, 68224, 103976, 131872, 168961, 207952, 263744, 337922, 415904, 527488, 675844, 831808, 1351688, 1663616, 2703376, 5406752, 10813504, 21627008]

約数ペア:

[(1, 21627008), (2, 10813504), (4, 5406752), (8, 2703376), (13, 1663616), (16, 1351688), (26, 831808), (32, 675844), (41, 527488), (52, 415904), (64, 337922), (82, 263744), (104, 207952), (128, 168961), (164, 131872), (208, 103976), (317, 68224), (328, 65936), (416, 51988), (533, 40576), (634, 34112), (656, 32968), (832, 25994), (1066, 20288), (1268, 17056), (1312, 16484), (1664, 12997), (2132, 10144), (2536, 8528), (2624, 8242), (4121, 5248), (4264, 5072)]