1631800

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 3906000

約数和(自身を除く): 2274200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 199, 200, 205, 328, 398, 410, 796, 820, 995, 1025, 1592, 1640, 1990, 2050, 3980, 4100, 4975, 7960, 8159, 8200, 9950, 16318, 19900, 32636, 39800, 40795, 65272, 81590, 163180, 203975, 326360, 407950, 815900, 1631800]

約数ペア:

[(1, 1631800), (2, 815900), (4, 407950), (5, 326360), (8, 203975), (10, 163180), (20, 81590), (25, 65272), (40, 40795), (41, 39800), (50, 32636), (82, 19900), (100, 16318), (164, 9950), (199, 8200), (200, 8159), (205, 7960), (328, 4975), (398, 4100), (410, 3980), (796, 2050), (820, 1990), (995, 1640), (1025, 1592)]