21476416

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{311}}^1$

素因数の和:419

約数の個数: 56

約数和(自身を含む): 46597824

約数和(自身を除く): 25121408

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 83, 104, 166, 208, 311, 332, 416, 622, 664, 832, 1079, 1244, 1328, 2158, 2488, 2656, 4043, 4316, 4976, 5312, 8086, 8632, 9952, 16172, 17264, 19904, 25813, 32344, 34528, 51626, 64688, 69056, 103252, 129376, 206504, 258752, 335569, 413008, 671138, 826016, 1342276, 1652032, 2684552, 5369104, 10738208, 21476416]

約数ペア:

[(1, 21476416), (2, 10738208), (4, 5369104), (8, 2684552), (13, 1652032), (16, 1342276), (26, 826016), (32, 671138), (52, 413008), (64, 335569), (83, 258752), (104, 206504), (166, 129376), (208, 103252), (311, 69056), (332, 64688), (416, 51626), (622, 34528), (664, 32344), (832, 25813), (1079, 19904), (1244, 17264), (1328, 16172), (2158, 9952), (2488, 8632), (2656, 8086), (4043, 5312), (4316, 4976)]