199428920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1\times {\mathrm{439}}^1$

素因数の和:768

約数の個数: 64

約数和(自身を含む): 462369600

約数和(自身を除く): 262940680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 277, 328, 410, 439, 554, 820, 878, 1108, 1385, 1640, 1756, 2195, 2216, 2770, 3512, 4390, 5540, 8780, 11080, 11357, 17560, 17999, 22714, 35998, 45428, 56785, 71996, 89995, 90856, 113570, 121603, 143992, 179990, 227140, 243206, 359980, 454280, 486412, 608015, 719960, 972824, 1216030, 2432060, 4864120, 4985723, 9971446, 19942892, 24928615, 39885784, 49857230, 99714460, 199428920]

約数ペア:

[(1, 199428920), (2, 99714460), (4, 49857230), (5, 39885784), (8, 24928615), (10, 19942892), (20, 9971446), (40, 4985723), (41, 4864120), (82, 2432060), (164, 1216030), (205, 972824), (277, 719960), (328, 608015), (410, 486412), (439, 454280), (554, 359980), (820, 243206), (878, 227140), (1108, 179990), (1385, 143992), (1640, 121603), (1756, 113570), (2195, 90856), (2216, 89995), (2770, 71996), (3512, 56785), (4390, 45428), (5540, 35998), (8780, 22714), (11080, 17999), (11357, 17560)]