7979900

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:614

約数の個数: 36

約数和(自身を含む): 17446800

約数和(自身を除く): 9466900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 401, 796, 802, 995, 1604, 1990, 2005, 3980, 4010, 4975, 8020, 9950, 10025, 19900, 20050, 40100, 79799, 159598, 319196, 398995, 797990, 1595980, 1994975, 3989950, 7979900]

約数ペア:

[(1, 7979900), (2, 3989950), (4, 1994975), (5, 1595980), (10, 797990), (20, 398995), (25, 319196), (50, 159598), (100, 79799), (199, 40100), (398, 20050), (401, 19900), (796, 10025), (802, 9950), (995, 8020), (1604, 4975), (1990, 4010), (2005, 3980)]