21116500

素因数分解:

$2^2\times 5^3\times {\mathrm{157}}^1\times {\mathrm{269}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 46584720

約数和(自身を除く): 25468220

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 157, 250, 269, 314, 500, 538, 628, 785, 1076, 1345, 1570, 2690, 3140, 3925, 5380, 6725, 7850, 13450, 15700, 19625, 26900, 33625, 39250, 42233, 67250, 78500, 84466, 134500, 168932, 211165, 422330, 844660, 1055825, 2111650, 4223300, 5279125, 10558250, 21116500]

約数ペア:

[(1, 21116500), (2, 10558250), (4, 5279125), (5, 4223300), (10, 2111650), (20, 1055825), (25, 844660), (50, 422330), (100, 211165), (125, 168932), (157, 134500), (250, 84466), (269, 78500), (314, 67250), (500, 42233), (538, 39250), (628, 33625), (785, 26900), (1076, 19625), (1345, 15700), (1570, 13450), (2690, 7850), (3140, 6725), (3925, 5380)]