20815808

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:349

約数の個数: 56

約数和(自身を含む): 45061632

約数和(自身を除く): 24245824

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 127, 197, 208, 254, 394, 416, 508, 788, 832, 1016, 1576, 1651, 2032, 2561, 3152, 3302, 4064, 5122, 6304, 6604, 8128, 10244, 12608, 13208, 20488, 25019, 26416, 40976, 50038, 52832, 81952, 100076, 105664, 163904, 200152, 325247, 400304, 650494, 800608, 1300988, 1601216, 2601976, 5203952, 10407904, 20815808]

約数ペア:

[(1, 20815808), (2, 10407904), (4, 5203952), (8, 2601976), (13, 1601216), (16, 1300988), (26, 800608), (32, 650494), (52, 400304), (64, 325247), (104, 200152), (127, 163904), (197, 105664), (208, 100076), (254, 81952), (394, 52832), (416, 50038), (508, 40976), (788, 26416), (832, 25019), (1016, 20488), (1576, 13208), (1651, 12608), (2032, 10244), (2561, 8128), (3152, 6604), (3302, 6304), (4064, 5122)]