21683584

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 64

約数和(自身を含む): 47381040

約数和(自身を除く): 25697456

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 83, 104, 128, 157, 166, 208, 314, 332, 416, 628, 664, 832, 1079, 1256, 1328, 1664, 2041, 2158, 2512, 2656, 4082, 4316, 5024, 5312, 8164, 8632, 10048, 10624, 13031, 16328, 17264, 20096, 26062, 32656, 34528, 52124, 65312, 69056, 104248, 130624, 138112, 169403, 208496, 261248, 338806, 416992, 677612, 833984, 1355224, 1667968, 2710448, 5420896, 10841792, 21683584]

約数ペア:

[(1, 21683584), (2, 10841792), (4, 5420896), (8, 2710448), (13, 1667968), (16, 1355224), (26, 833984), (32, 677612), (52, 416992), (64, 338806), (83, 261248), (104, 208496), (128, 169403), (157, 138112), (166, 130624), (208, 104248), (314, 69056), (332, 65312), (416, 52124), (628, 34528), (664, 32656), (832, 26062), (1079, 20096), (1256, 17264), (1328, 16328), (1664, 13031), (2041, 10624), (2158, 10048), (2512, 8632), (2656, 8164), (4082, 5312), (4316, 5024)]