21459500

素因数分解:

$2^2\times 5^3\times {\mathrm{167}}^1\times {\mathrm{257}}^1$

素因数の和:443

約数の個数: 48

約数和(自身を含む): 47331648

約数和(自身を除く): 25872148

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 167, 250, 257, 334, 500, 514, 668, 835, 1028, 1285, 1670, 2570, 3340, 4175, 5140, 6425, 8350, 12850, 16700, 20875, 25700, 32125, 41750, 42919, 64250, 83500, 85838, 128500, 171676, 214595, 429190, 858380, 1072975, 2145950, 4291900, 5364875, 10729750, 21459500]

約数ペア:

[(1, 21459500), (2, 10729750), (4, 5364875), (5, 4291900), (10, 2145950), (20, 1072975), (25, 858380), (50, 429190), (100, 214595), (125, 171676), (167, 128500), (250, 85838), (257, 83500), (334, 64250), (500, 42919), (514, 41750), (668, 32125), (835, 25700), (1028, 20875), (1285, 16700), (1670, 12850), (2570, 8350), (3340, 6425), (4175, 5140)]