20784433904

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{178757}}^1$

素因数の和:178834

約数の個数: 60

約数和(自身を含む): 44620141896

約数和(自身を除く): 23835707992

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 169, 172, 208, 338, 344, 559, 676, 688, 1118, 1352, 2236, 2704, 4472, 7267, 8944, 14534, 29068, 58136, 116272, 178757, 357514, 715028, 1430056, 2323841, 2860112, 4647682, 7686551, 9295364, 15373102, 18590728, 30209933, 30746204, 37181456, 60419866, 61492408, 99925163, 120839732, 122984816, 199850326, 241679464, 399700652, 483358928, 799401304, 1299027119, 1598802608, 2598054238, 5196108476, 10392216952, 20784433904]

約数ペア:

[(1, 20784433904), (2, 10392216952), (4, 5196108476), (8, 2598054238), (13, 1598802608), (16, 1299027119), (26, 799401304), (43, 483358928), (52, 399700652), (86, 241679464), (104, 199850326), (169, 122984816), (172, 120839732), (208, 99925163), (338, 61492408), (344, 60419866), (559, 37181456), (676, 30746204), (688, 30209933), (1118, 18590728), (1352, 15373102), (2236, 9295364), (2704, 7686551), (4472, 4647682), (7267, 2860112), (8944, 2323841), (14534, 1430056), (29068, 715028), (58136, 357514), (116272, 178757)]