21654368

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 23052448

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 83, 124, 166, 248, 263, 332, 496, 526, 664, 992, 1052, 1328, 2104, 2573, 2656, 4208, 5146, 8153, 8416, 10292, 16306, 20584, 21829, 32612, 41168, 43658, 65224, 82336, 87316, 130448, 174632, 260896, 349264, 676699, 698528, 1353398, 2706796, 5413592, 10827184, 21654368]

約数ペア:

[(1, 21654368), (2, 10827184), (4, 5413592), (8, 2706796), (16, 1353398), (31, 698528), (32, 676699), (62, 349264), (83, 260896), (124, 174632), (166, 130448), (248, 87316), (263, 82336), (332, 65224), (496, 43658), (526, 41168), (664, 32612), (992, 21829), (1052, 20584), (1328, 16306), (2104, 10292), (2573, 8416), (2656, 8153), (4208, 5146)]