208537880

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{65993}}^1$

素因数の和:66083

約数の個数: 32

約数和(自身を含む): 475156800

約数和(自身を除く): 266618920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 65993, 131986, 263972, 329965, 527944, 659930, 1319860, 2639720, 5213447, 10426894, 20853788, 26067235, 41707576, 52134470, 104268940, 208537880]

約数ペア:

[(1, 208537880), (2, 104268940), (4, 52134470), (5, 41707576), (8, 26067235), (10, 20853788), (20, 10426894), (40, 5213447), (79, 2639720), (158, 1319860), (316, 659930), (395, 527944), (632, 329965), (790, 263972), (1580, 131986), (3160, 65993)]