78960500

素因数分解:

$2^2\times 5^3\times {\mathrm{79}}^1\times {\mathrm{1999}}^1$

素因数の和:2097

約数の個数: 48

約数和(自身を含む): 174720000

約数和(自身を除く): 95759500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 125, 158, 250, 316, 395, 500, 790, 1580, 1975, 1999, 3950, 3998, 7900, 7996, 9875, 9995, 19750, 19990, 39500, 39980, 49975, 99950, 157921, 199900, 249875, 315842, 499750, 631684, 789605, 999500, 1579210, 3158420, 3948025, 7896050, 15792100, 19740125, 39480250, 78960500]

約数ペア:

[(1, 78960500), (2, 39480250), (4, 19740125), (5, 15792100), (10, 7896050), (20, 3948025), (25, 3158420), (50, 1579210), (79, 999500), (100, 789605), (125, 631684), (158, 499750), (250, 315842), (316, 249875), (395, 199900), (500, 157921), (790, 99950), (1580, 49975), (1975, 39980), (1999, 39500), (3950, 19990), (3998, 19750), (7900, 9995), (7996, 9875)]