21209000

素因数分解:

$2^3\times 5^3\times {\mathrm{127}}^1\times {\mathrm{167}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 50319360

約数和(自身を除く): 29110360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 127, 167, 200, 250, 254, 334, 500, 508, 635, 668, 835, 1000, 1016, 1270, 1336, 1670, 2540, 3175, 3340, 4175, 5080, 6350, 6680, 8350, 12700, 15875, 16700, 20875, 21209, 25400, 31750, 33400, 41750, 42418, 63500, 83500, 84836, 106045, 127000, 167000, 169672, 212090, 424180, 530225, 848360, 1060450, 2120900, 2651125, 4241800, 5302250, 10604500, 21209000]

約数ペア:

[(1, 21209000), (2, 10604500), (4, 5302250), (5, 4241800), (8, 2651125), (10, 2120900), (20, 1060450), (25, 848360), (40, 530225), (50, 424180), (100, 212090), (125, 169672), (127, 167000), (167, 127000), (200, 106045), (250, 84836), (254, 83500), (334, 63500), (500, 42418), (508, 41750), (635, 33400), (668, 31750), (835, 25400), (1000, 21209), (1016, 20875), (1270, 16700), (1336, 15875), (1670, 12700), (2540, 8350), (3175, 6680), (3340, 6350), (4175, 5080)]